We went back to the sediment point. A few more chops with the entrenching tool opened a hole in the compacted layer. I shone my flashlight inside; the space was not small, and there was a drop of more than a meter from the opening to the ground below. Carter rolled up his sleeves and moved to go down. I grabbed him.
"Not yet. We haven't tested the air."
Catching birds in the woods was not hard. We scattered a few grains, inverted the cooking pot and propped it with a stick, then backed off. When a bird slipped in to peck, we pulled the cord and yanked the support away, the pot dropping to cover it. We caught three. I put one into a small cage we improvised, tied a rope to it, and lowered it into the hole slowly. After a while I hauled it back up. The bird lay on its back, eyes rolled white.
The air below was unsafe.
This underground space had been sealed for years. Air inside had not circulated for a long time. Any organic matter decomposing in a closed environment produces gas and consumes oxygen. Even after decades, such spaces can still accumulate hydrogen sulfide or methane, or become oxygen-depleted. Still air is not a vacuum, but it is dangerous enough. Breathing a high concentration of toxic gas in an enclosed space can mean dizziness and nausea at best, suffocation and blackout at worst. Without proper protective gear, you handle it carefully.
Clearly, the air below needed time to exchange with the outside, so we went back up the slope and ate some jerky and dry rations. We had barely slept the night before, and today we had worked continuously; the drain was real. But the thought that the sediment core might be directly beneath us pressed the fatigue down. This was our first true deep dig. Everything before this had still been structural analysis; now it counted as execution. The scale of the structure did not seem large, more like a temporary wartime underground storage space. The work was not fine, but the compacted layer was solid, clearly designed for long-term sealing.
By the time we finished eating, it was already getting late. Considering there could still be risk around the opening at night, we decided to complete the check as quickly as possible, take samples, and leave. With the tools, we went back down into the valley.
This time we lowered a bird again to test the air. When we pulled it up, it was still lively, which meant the oxygen level had recovered into a safe range. Carter and I each took a mouthful of liquor, put on masks and gloves, checked flashlights and tools, then prepared to enter the space.
Erin saw us getting ready and came over, saying she wanted to go in and take a look as well.
"There's nothing to see down there," I said. "Just an abandoned space."
"I want to confirm the structure," she said.
I hesitated. This was remote enough that we did not need someone specifically posted outside, and one more person inside would make us steadier. I handed her a mask and told her not to take it off once she was in, to avoid breathing any residual gas, and not to disturb interior deposits casually, in case it affected stability. Not every rule has strict scientific backing, but in a sealed space, caution is always safer than bravado. We checked gear again and then went down.
The opening was less than a meter above the floor below, no rope needed. I jumped first. When my boots hit solid ground, I still tightened my breath without meaning to. We were in. The space was not large, about three hundred square feet, laid out as a rectangle, divided front and back, with recessed side chambers on both sides. We landed in one of the side chambers. The central area dipped slightly, and a wooden coffin sat there. No platform; a shallow pit had been cut into the center of the floor, and the coffin was set into it, half exposed, as if it had been sealed again later. It looked like a structure inside a structure. In one corner of the main room lay several sets of human bones, skulls with clear fractures, like blunt-force blows. We were not archaeologists, and we had no intention of judging who they were.
Erin suddenly grabbed my arm. "Paintings on the wall."
I swung the flashlight over. The wall still held painted reliefs. The figures were blunt and direct, proportions exaggerated, but clearly legible. The colors had dimmed, yet the content could still be read. With fresh air flowing in, the pigment probably would not last much longer.
"Looks like it's telling a story," Carter said quietly.
I nodded. There were eight panels. We went through them in order. Some showed mountain hunting, some showed people seated around fire, some showed a traveling group, some showed animals being driven. In the last panel, a person draped in hides stood at the mountain's closure, the ground split behind him. The same figure appeared in every panel. The one buried here was obviously him. It looked more like the resting place of a ritual leader.
Some Blackfeet elders call places where a mountain closes "Old Man's closure," and say terrain like that should not be entered. The stories do not explain why. They leave only warning. We made a circuit of the space. The side chambers held stone vessels and bone tools; the back room held piles of animal bones and a few stone blades. No metal implements, no obvious display of wealth. This place did not chase luxury. I felt a faint disappointment, lit a candle in the southeast corner, and the three of us walked together to the coffin at the center. Whether there was anything to take came down to this.
The coffin was sizable, made from dense timber, its surface carved with simplified totem patterns, lines strange yet orderly. The wood had clearly been treated; sealed long-term in dry conditions, it could block moisture and slow decay, far more durable than ordinary lumber, resisting rot and insects instead of being eaten away quickly like soft wood. For the conditions of the time, this was high-grade work.
I drove the entrenching tool into the seam of the lid and pried. It was fixed tight; two tries didn't open it. Carter came to help, and we put our weight into it together. The coffin gave a low groan under pressure and finally split a seam. We shifted positions, loosening the anchor points one by one. Inside was extremely dry. The walls had kept moisture out well, and there were no seep marks above. Most rain in the valley was absorbed by the leaf layer overhead. Dust had filled the interior; the moment we disturbed it, it rose in a thick cloud. Even with masks, we coughed hard, regretting that we hadn't brought real filter respirators.
Carter reached to push the lid. I caught him. "Guess what's inside."
He snorted. "As long as it's worth something."
I lowered my voice. "I've heard a story—two people opened a coffin underground, prying and prying and it wouldn't budge. Then one of them leaned in and muttered a few words, and the lid split on its own… and a hand came out." Carter didn't react, but Erin stepped back at once. "Don't talk like that."
He knew I was trying to spook him and kept his face blank. "Go on. I'm listening."
"The nails were long," I said. "Sharp as knives. It grabbed the one who spoke and dragged him into the coffin. The lid slammed shut, nothing left but screaming. The other one turned and ran." Carter forced a grin, a little dry, but stepped up with me and shoved the lid. We pushed too hard; the whole lid tipped and hit the ground, and what lay inside was exposed at once. A tall corpse lay there, moisture almost entirely gone, dark dry skin tight against the frame. In this environment, that level of preservation was remarkably intact. The features had collapsed, eyes and nose reduced to black hollows, but the facial structure was still clear. Mid-forties, maybe fifty. Fragments of a headdress or binding remained around the skull. Faded fabric covered the torso. The hands were crossed over the chest. On the chest lay a metal mask, its edges dulled, yet still giving off a restrained golden sheen. Beside it were several heavy objects—one a rough natural gold lump, the others dense, dark hard stones, not sparkling in the flashlight beam, but clearly not ordinary rock.
Erin leaned past Carter to look once and sucked in a breath. "That's terrifying." She turned her eyes away fast. The way she said it made my scalp tighten too, but the coffin was already open; turning around and climbing out now would look ridiculous. Carter and I had grown up getting into trouble together, and we weren't going to flinch in front of a dried corpse, so I forced myself forward, nodded toward the body, and said, "Sir, no disrespect, we're just borrowing what you don't need anymore, times are tight, we'll make good use of it."
Carter chuckled low. "You negotiating a lease with him?"
"Shut up," I said. "Have some ceremony."
I wanted to add one more line, but Carter had already reached in and started grabbing around. I dropped my voice at once. "Easy. Don't scatter his bones. We're not here to wreck the place." He didn't listen. Since we entered, there hadn't been anything truly worthwhile—just pottery and bones. After all that effort he needed a result off the owner. As he rummaged he said, "If we'd gotten a haul like this every time we raided your basement as kids, I'd have been rich."
He felt around the chest and sides, lowered the flashlight, and I leaned in. The corpse's chest was covered by a thick metal mask, darkened on the surface but holding a steady golden sheen, clearly solid-cast and not light. Beside it, several natural gold lumps were stacked neatly, each close to fist-sized, rough on the surface but dense and heavy, reflecting a soft yet unmistakable gold under the light—more than one or two, seven or eight pressed along both sides of the body, placed with precision. Between the gold lumps were several dark stones cut into geometric forms, edges ground smooth, arranged in a symmetrical pattern, not like casual grave goods but more like a fixed layout.
Carter said under his breath that this finally looked like something. I lifted one gold lump in my hand; the weight was shocking. That single piece would cover our costs, let alone the entire stack. We removed the mask, took a few gold lumps and two of the stones, left the rest in place, then closed the lid again. We hadn't stripped the whole tomb, but this haul was far beyond expectation. I told them it was about time to get out, seal the entrance, and go. I turned—then saw the candle in the corner had gone out at some point.
There was no wind in the chamber.
The flame still died.
All three of us stopped.
Carter spoke first, asking if maybe he was unhappy, if we had taken too much. I didn't answer. I looked back at the coffin. The lid sat tight, no movement, but the air felt heavier than it had a moment ago.
Erin said softly that there hadn't been any change in airflow; she had been standing by the entrance, she would have felt it if there were wind.
Carter stared at the gold in my hand and asked whether we should put one piece back as a test—if the flame relit, maybe it was coincidence; if it didn't, then we really had taken too much.
Before I could speak, Carter and Erin started arguing. Carter said maybe it was just chance, that we couldn't give back everything we'd gotten over one candle. Erin insisted something was wrong—there had been no wind, no obvious movement of air, and yet the flame had gone out; taking this much under those conditions was too risky.
I stood between them looking at the gold lumps and the metal mask, weighing it too—take everything, put everything back, or return part of it as a test. We didn't know whether the candle dying was some kind of response; it could have been a pressure shift or an illusion of airflow. If we returned everything now, it would be rash; if we returned nothing, it would look greedy.
In the end I proposed a compromise: relight the candle first, then return one gold lump or one piece of pottery and watch whether the flame held; if it died again, we return another item; and if it kept refusing, we keep only the two geometric stones and return everything else. That way we wouldn't go out empty-handed, and we'd still be making a "concession" to the owner.
Carter stared at me a moment and said I was bargaining with a corpse. I said maybe, or maybe it was bargaining with our own heads, but it was better than freezing where we stood. He thought, then nodded. Fine—he'd put one lump back first, I'd light the candle; if it died again, we'd return another; and if it allowed nothing at all, we'd take the loss.
I talked myself into a rational explanation as I walked to the corner, struck a match, and lit the candle again. The flame rose and didn't waver. By then Carter had already placed the fist-sized gold lump back on the coffin board. He didn't lift the lid again; he just eased it back to where it had been, then stepped back and watched the firelight.
None of us spoke.
The flame held.
It didn't die again.
Carter said softly, like a conclusion, that it looked like he could accept a little discount.