Marcus Phoenix came to map a monster's lair. For thirty years, hikers had vanished on these trails, and locals blamed a creature no one photographed. Marcus had spent his youth as a park ranger, then traded his badge for a camera and a notebook. Now he stood before a sagging log cabin with two peeling signs, "Management" and "Check-in." He needed the recluse who ran this place. Only that man knew which paths hid the creature and which just swallowed strangers whole. The door opened before Marcus knocked. An old man leaned in the frame, bent by a bad back, one eye clouded white as bone. His overalls were stiff with dirt. He looked Marcus over the way a man sizes up a trespasser. "Cabin for the week," Marcus said. "I'll pay cash." "Number one. Up the trail, left." The old man's voice scraped like a rusted hinge. "You a hunter?" "I map things." Marcus set money on the porch rail. "I hear people go missing out here. I want to know which trails do it." The old man's jaw tightened. "Trails don't take nobody. People take themselves. Wander off, get turned around, gone." He turned to go inside. "Stay off 'em. That's my advice." Marcus caught the door with his boot. "You've lived here decades. You know every path. I'm not leaving until you tell me the difference between a lost trail and a dangerous one." For a long moment the old man said nothing. Behind Marcus, a swing chain creaked. A barefoot girl in a faded flour-sack dress swung slow on a rusted swingset. She hummed a tune with no melody Marcus knew. Her feet dragged the dirt in time. "Grandpa knows," the girl said, not stopping. "He walked all of them. He came back." The old man's clouded eye twitched. He looked at the girl, then back at Marcus. Something in him settled, or gave up. "You a ranger once," he said. It wasn't a question. "I can tell. You walk light." He stepped onto the porch. "Fine. You won't quit, and I'm tired of burying strangers." He pointed past the drooping pines behind the cabins. "Three trails fork past the pines. The left one loops. Fools follow it till dark and panic. The middle one's honest. It'll take you round the lake and home." "And the right?" The old man wet his lips. "The right one don't loop. It goes down. That's where the missing went. That's where it dens." Marcus pulled out his notebook and wrote fast. His hand shook once, then steadied. "You'll want the right trail," the old man said. "Everybody like you does." He looked at the girl on the swing. "But nobody's mapped it and walked back out. You'd be the first, or the next name I dig a hole for." Marcus closed the notebook. He finally knew which path led to the lair. Now he had to walk it.

The old man's warning followed Marcus up the trail. He found cabin one where the manager said, the number one bold on its warped door. Inside it smelled of mold and wet wood. A patched bed slumped in the corner. A small desk waited under the window. Marcus dropped his pack. He had a lair to map, and he needed rest before he tried the right trail at dawn. He searched the sagging porch for firewood. He found split logs stacked against the rail. He built a fire in the stone ring out front and fed it until the flames stood high. He sat close and watched the wood burn down to red coals. When the last light dimmed, he went inside, kicked off his boots, and lay under the frumpy blankets. Sleep came fast. A scratch woke him. Slow claws dragged across the door. Wood groaned. Marcus sat up, heart hammering. He heard heavy feet cross the porch boards. Then a moan rolled through the walls, low and wet, like wind forced through a dead throat. He reached for his flashlight. He did not turn it on. He crept to the window and looked through a gap in the boards. A shape stood in the coals' dying glow. It was tall, far too tall, and thin as bare branches. Ribs pushed against gray skin. Antlers rose from a skull-white face. Two eyes burned pale blue, fixed on the door. The Wendigo. The creature the missing hikers never named because none returned. Marcus stayed still. His mind raced past the fear to the work. This was his quarry. If he could see how it moved, he could learn where it came from. The thing scratched the door again. It tested the latch with one long finger. Marcus's throat went dry. The wood held, but barely. He would not survive a second night this exposed. He made a choice. He eased his notebook from his pack and set his back against the wall beside the window. Through the gap he watched. He sketched the antlers, the ribs, the way the legs bent wrong. He wrote the time. He wrote how it favored its left side, dragging one foot. After a long while the creature turned. It moved off the porch and crossed the clearing toward the pines. Marcus pressed his eye to the gap and marked the direction. It went right. Toward the trail that descends. Toward the den. He did not sleep again. He sat by the window until gray light filled the room. The coals were cold ash. On the door, four gouges cut deep into the wood, level with his throat. Marcus ran his thumb along the marks. He had seen the creature and lived. He knew now which way it came and went. His map had its first true line. But the thing had his scent, and it knew exactly where he slept.

Dawn gave Marcus light but no answers. From the cabin window he had watched the Wendigo slip into the pines on the right. Now he stood at the treeline and could not find where the descending path began. Brush choked the slope. Roots and fallen limbs hid any trail. He circled the clearing twice, boots slick on wet leaves. The sun climbed. Every hour lost meant tracking the creature's den in the dark, and he would not risk that. He pushed into the brush where he thought the shape had vanished. Branches raked his arms. The ground fell away, then leveled into thicket with no clear line down. He backtracked, marked a tree with his knife, and tried again from a different angle. Same wall of green. His shirt clung to his back. He checked his watch and cursed. Half the morning gone, and he stood no closer to the mouth of the trail. "You're looking wrong." Marcus spun. The barefoot girl stood behind him, the same child who had spoken at the manager's cabin the day he arrived. Her dress hung faded and thin. Her hair fell in two loose braids. She watched him with a flat, still face, as if she had grown here among the roots. He had not heard her approach. "You know this slope?" Marcus asked. He kept his voice easy. His heart pounded. She pointed past him, not at the brush, but at a gray stone half-sunk in the dirt. "The old man walks it there. Behind the rock. You have to go under." Marcus knelt by the stone. He had passed it twice. Behind it, hidden by a curtain of vine, the ground dropped into a narrow cut. Cold air breathed out of it. Faint tracks pressed the mud below—long feet, one dragging. The Wendigo's. The trail did not start at the treeline. It started under the rock, and only a body that knew it could find the way. "Why help me?" he asked. The girl tilted her head. "He walks all of them. But nobody walks back up." She said it without fear, the way she might report the weather. Then she turned and walked into the pines. When Marcus looked again, she was gone. He tore the vine away and widened the gap. The cut sloped down into shadow, steep but clear. He pulled his notebook out and drew the true mouth of the trail—behind the stone, not the treeline. His map now had its second line, and it pointed straight into the ground. Marcus checked his pack, tightened the straps, and stepped down through the gap. Damp closed around him. Above, daylight shrank to a bright slit. The dragging tracks ran ahead of him into the dark. He had found the path. Now it would take him to the den, and the thing that made those tracks had his scent.

Ten steps down, the light died. Marcus stopped where the daylight slit above him closed to nothing. He pulled out his flashlight and swept it across the walls. The beam showed wet stone, then a wall of black beyond. The batteries fluttered and dimmed. He shook the light. It steadied, but only for a moment. He could not map what he could not see, and one weak beam would not carry him to the den. He turned around and climbed back into the daylight. The walk to Cabin 4 took the last of the afternoon. He needed fire that would last, not a beam that begged for batteries. Inside, he emptied his pack onto the floor. He found rags, a tin of lamp oil, and a coil of wire. He cut three stout branches from the porch rail. He wrapped each head in oiled rag and bound it tight with wire. When he was done, three torches leaned against the wall like a rough little rack. He soaked their heads a second time so they would burn slow. He rested until dark, then slept in bursts. Twice he woke to scratching at the door. The latch rattled. He did not open it. By dawn the sounds were gone and the tracks in the mud outside led back toward the stone. He returned to the cut with the torches strapped across his pack. He struck a match at the mouth and lit the first one. The flame caught and held, throwing orange light down the shaft. This time the dark gave way. He counted his steps and marked the wall with chalk at each turn. The passage dropped, curved, then widened. Cold air pushed against his face. His torch showed him the floor, the walls, the low ceiling, and he drew each stretch in his notebook as he went. The tunnel opened into a vast space. Marcus raised the torch and stopped. Roots thick as his leg hung from the ceiling. They twisted down into a hollow floor of packed dirt. Above the roots, faint light leaked through a gap where a great oak stood rooted in the earth. Ink-dark leaves shifted far overhead. He had climbed down under a tree, and the tree's belly was the creature's home. Bones lay scattered near the far wall. Long feet had pressed the dirt in every direction. Marcus knelt and drew the hollow. He marked the roots, the bones, the gap of light, the tunnel behind him. His map now reached the den itself. The torch had beaten the dark and given him the room. Then his light found the far side of the hollow. A second tunnel opened there, and a third beside it. The dragging tracks split and ran into both. He had found the lair, but the creature had more than one way out. And one of those ways, he now saw, climbed back toward the cabins.