Bri was alone in the woods, walking her typical trail on another cold winter afternoon. The night before had dusted the ground with snow, but barely enough to call it that. However, this wouldn't stop her from enjoying the day.

She had a small frame and was always mistaken for a girl in high school still, though she was now freshly 20 years old. Because of this, Bri tended to hike on this particular trail to avoid other people as much as possible. It gets annoying being asked why she wasn't in school all the time, and she preferred the quiet sounds of nature to the conversation.

The trail was hardly even more of a deer path leading to a small valley between two hills. At the end of the pathway, a beautiful waterfall with a crystal clear pool she frequented during the summer to swim in. Now she hoped to see if frozen for the first time ever. Having enjoyed photos of frozen waterfalls online the previous day, she figured it would be interesting to see one up close.

Bri made her way through the twisted pathway. It was a bit harder to see today with the thin layer of snow, but her muscle memory of the trail made it possible. The walk began cold and almost led to Bri turning around a few times, but halfway to the destination, she began to warm and soon needed to remove her coat to avoid overheating. By the time she'd reached the beginning of the river that led to the waterfall, she was in a long sleeve and her yoga pants. Her jacket and sweatpants tucked away in her backpack, she cares on her hikes.

She reached the narrow rock passage she needed to squeeze through to get to the spot. Even her petite frame had trouble in places making through, but she managed nonetheless. Clearing the rocks gave Bri the view she was hoping for.

In front of her was a small clearing with a large pond with steep walls on either side. Directly behind it was the waterfall, frozen in place as if time had halted. The crystalline form sparkled in the mid-afternoon light. The trickling water was still being heard as it tried its best to be the roaring torrent of water it usually was.

She approached the fifty-foot structure with delight and reverence. She then took off her mitten and touched the frozen form to feel the firmness and to confirm it was really there. As she wandered around the side of it through, Bri noticed something different.

Due to the freezing of the waterfall, there was now a tiny opening behind it. What was typically camouflaged with a crashing waterfall now showed a cavern. The space was probably only 3 or 4 feet in width and not even tall enough for Bri to stand up straight at 5 foot 2 inches. How deep it went was unknown, but Bri could see a faint light down a way into the tunnel.

Curiosity gripped her as she looked at the new discovery. Her mind swam with questions and fantastical assumptions. Bri knew though it was probably a poor plan to just go into an unknown tunnel where no one knew where she was. She knew she'd be done for in this fridged weather if she got stuck or lost. But as she weighed her options, her curiosity won out, making her take her first few steps into the cavern behind the waterfall.

The stone and cold to the touch as she made her way deeper into the cave. A few times, Bri thought she heard noises, causing her to jump and strike her head on the nearby ceiling. This didn't deter her from going further, though.

Soon she found the cave grew warmer and drier. The light became brighter as she moved deeper inside. Finally, the cave began to open up a bit, allowing Bri to stand straight, and soon she couldn't touch either wall or the ceiling with stretched-out hands.

It wasn't much further that she found herself in a larger cave opening, the light she'd seen from a shaft that opened above her to the afternoon sky. Some grass and moss filled the ground and walls of the small cave place. There seemed to be a few other pathways leading deeper into the hill, but they were all too dark to glimpse further into. In the middle of the opening was a pool of water, which was surprisingly steaming a bit. Bri had found a hot spring inside the mountain.

It wasn't uncommon to find a hot spring where she lived, but most were locked up by the person who owned the land or monetized to people as part of a spa treatment facility. So having found one that seemed to be untouched by humans was exceedingly rare and thrilling to Bri.

In no time and with almost zero consideration, she had dropped her backpack in the corner and removed her remaining clothing. The moss-covered ground was warm on her bare feet, and the air warm enough to remain comfortable out of the water naked as she was. She hurried to the edge of the spring and sat on the edge, dipping her legs into the hot water.

Bri let a groan of pleasure out as the heat filled her. She slid into the pool as if she'd melted. The spring was relaxing a peaceful. The water was so relaxing that all thoughts left her mind, and her body seemed to float without assistance.

She relaxed there for was seemed like a lifetime. The warm feeling and lack of caring about the world around her left Bri content with the moment. Her new little secret now became her favorite hiding spot from the rest of the world's chaos. But as this thought passes through her mind, she hears a low growl echo off the cave walls.

From a dark tunnel, two yellow eyes could be seen glowing. Their furousity leaves Bri shivering, even while in the hot spring. The primal message of danger screaming for her to run as fast and far as she could from here. The fear froze her in place, making her only watch as the creature padded towards her.

Bri saw a massive gray wolf as the animal moved from the shadows and into the spring light. The fur of its neck stood up as he predatorily moved closer to her. His bulk put her own frame to shame. She knew he was a male because even with him crouching in a position to pounce, she could see his genitals.

The wolf grew closure, and she slowly started moving to the far side of the hot spring. She hoped to get out slowly and run for the cavern door she had entered, but as the thought crossed her mind, the wolf began circling around and covering her retreat. Her escape was cut off, and the other tunnels were a mystery to her. Bri needed to make a decision soon.

He no longer circled around the pool of water, instead choosing the glare at her in the water. Bri slowly began exiting the water, sitting on the end of the pool to see his reaction. Then she slowly stood, never turning her back to the beast.

She stood there, the air colder than she remembered, shivering. Whether she was shivering from the cold or fear, Bri wasn't sure. The wolf barked as she watched and wondered what to do to escape this terrifying situation.

Bri jumped and squeaked from the surprise and stepped back, tripping on a nearby rock that jutted out of the mossy ground. She fell roughly onto her rear. The pain was sudden, making her forget what was watching her, though only for a moment. Unfortunately, that was long enough for the wolf to start stalking her again.

The sign of the massive beast coming towards her again triggered her flight mechanism. Without a second thought, she scrambled to her hands and knees and began to move. She slipped and landed hard on her elbows as she attempted to switch from crawling to standing. Shooting pain filled her arms. She pushed herself back to her hands and knees, but it was too late.

Her body was pressed back to the ground with one massive paw. She could not push herself back up under the weight of this enormous wolf. It felt as if the paw covered the majority of her small back. Bri began to whimper and tear up, knowing this would be her end.

The pressure did not go away, but neither did her demise. Bri laid still and listened. The sound soft sound of sniffing could be heard. The feeling of a cold noise and hot breath on her back was evidence of what the wolf was doing. She did not move a muscle.

He continued to sniff at her. First, smelling her neck and face and then moving to her rear. The wet noise poked at her butt, and Bri squeaked from the shock. A low growl could be heard, but no other actions were made as he continued smelling her rear. Then, he pushed his snout between her legs and took what seemed to be a deep breath.

It made Bri shiver as the wolf exhaled a hot breath onto her exposed slit. The paw on her back shifts to her side, allowing her to finally take a deep breath. She wondered what the wolf was doing when the flat moist tongue licked between her thighs.

The sensation was shocking, yet a moan slipped from her lips. The feeling of disgust and terror filled Bri's soul as the wolf continued licking. When she attempted to move, she felt the paw on her back again and a low growl from him. She stopped moving, allowing him to continue to lick her pink hole.

Bri was horrified at what this creature was doing, but it grew harder to ignore the tingling sensation of pleasure that came from it as well. She panted as his tongue dug deeper inside and lapped at her. Then the long licks moving up her ass and teasing her tight hole made her groan. Was she seriously enjoying this animal's ministrations?

The wolf either did consider the difference in species or did not care because he continued to slide his tongue in her little holes. Every lick seemed to try and surpass the previous with the intensity and deepness into both of her holes. The wet flat tongue, strangely agile on her swollen clit, now apply exposed from Bri's unintentional hip, raising her ass in the air for the wolf to continue.

Her mind was lost in the different emotions and sensations that filled her. She was disgusted and enraged that this animal so blatantly assaulted her, yet her body was quivering, and the gasps of pleasure slipped out without her prompting. She knew she should kick this wolf, hoping it would shock him into stopping long enough to let her flee. That isn't what she did, though. Instead, Bri moaned, "fuck me."

Did she really just ask this dog to fuck her? But before she could consider her world further, the wolf had found his way, towering over her. The feeling of something significant and wet pressed against her exposed rear. Bri shuttered at the warmth looming over her and the weighty object resting on her ass, which still was arched in the air for the wolf.

Bri instinctively got to all fours. The thought of running was now gone as her primal desires burned in her. Her mind now told her that there was no way out of this situation and to accept her fate, even if she hated it. Deep down, though, Bri was eager for what would come next.

The large object slid from her rear and was now pressed against her little pink slit. Her curiosity made her look down between her legs. She saw a massive red cock that seemed as long and round as her forearm. A gigantic bulge was seen further up the shaft. Behind that were two balls that could be mistaken for fury baseballs in size and shape. Bri was afraid again.

Things continued, first with the pumping of the wolf's hips as the massive cock slid up and down her little hole. Bri was terrified to take him inside her, but the feeling of it rubbing on her clit also made her want to try. Finally, her internal conflict was arrested as he found purchase, splitting her lips apart and thrusting himself inside her, stretchering her further than she knew she could.

The initial shock and pain filled Bri's mind. The pressure of his massive cock finding its way deeper inside her only made her wonder if he would tear her apart. The pain sensation didn't subside, but the feeling of pleasure seemed to return as the faster and deeper thrusts seemed to drive her into a primal trance. Soon Bri was grabbing hold of the mossy ground and pushing herself back onto the rock-hard beast, her hole stretching further for him with ease.

She barely heard his grunts and panting of pleasure over her loud vocals. The wet slapping sound reverberated around the walls of the cavern. The ecstasy makes Bri hunger for him to breed her like one of his pack.

Bri could feel the cock push to the massive knot now. Even this deep in her, Bri could feel her stomach distend from when he forced himself deeper into her. It wasn't enough for her, though. She wanted all of him in her now. Bri continued to push herself further and further and take more of him. The knot stretched her, causing waves of pain and pleasure as it tried to push past her lips. Then, as if the wolf knew she was at her limits, he pulled back and away so only the tip remained in and immediately thrust harder than he had before, willing the knot to pass and inside of her.

She screamed from the pain and the delight of taking it all. The wolf howled as he put everything into this last bit. Then he released his hot fluids inside of her.

Bri could feel it filling her womb. The throbbing of the cock in her and the multiple gushes of his seed filled her, even though she wasn't sure her body could handle it all.

They both stayed there for a moment, breathing heavily. Bri was covered and sweat and dirt. Her mind was filled with delight from the situation, even as her body protested in pain and exhaustion. Under the pleasure was still the grimy film of disgust at this situation and herself for allowing all of this, but she buried it deep inside for now.

The wolf pulled out with a "POP" as his cock was removed from her. Along with his massive meat, a puddle of white fluids poured from her and onto the ground below. It dribbled down the inside of her thighs, and she could feel that there was more than she ever thought possible. Before she could question it further, her body and mind finally gave up, and she blacked out.

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