"Jason! Petey! Stay where you are! You'll fall and get killed!"

My voice cracked, making my words a hoarse whisper.

Straining to see through the haze, I hoped to catch a glimpse of Jason and Petey peering over the rim to try to find me. No sign of them. Maybe they're trying to get a better vantage point, I thought. Or maybe they're hurrying back to the mouth of the chasm, hoping to reach me from below.

I prayed that they'd be careful, that Jason wouldn't take foolish chances, that Petey would make sure he didn't. Trembling, I parted the rip in my sleeve. Wiping away the blood, I saw a gash five inches long between my elbow and my wrist. Blood immediately welled up, obscuring the wound. It dripped from my arm, pooling on the ledge.

Bile shot into my mouth.

Do something, I thought. I can't just sit here and let myself bleed to death.

My knapsack seemed to float above me. I stretched my good arm but couldn't reach it. In greater pain, I mustered the strength to try to stand.

The first-aid kit in the knapsack, I thought.

My legs gave out. I clawed at a niche and barely avoided toppling into the chasm. Despite the cold from the stream, I sweated. Shock made me tremble as I grabbed for a higher niche and wavered to my feet. For a moment, I saw specks in front of my eyes. Then my vision cleared, and I stared up toward the knapsack. Despairingly, it seemed as high as ever. My injured left arm dangled at my side. I extended my right arm upward. Another six inches. All I need is six inches more, I thought.

Pressing my chest against the cliff, standing on tiptoes, wincing from new throbbing pain in my hips, my sides, and my ribs, I stretched as high as I could, then breathed out in triumph as I touched the knapsack's strap.

Vapor from the stream had slicked the nylon. I lost my grip but instantly pawed for the strap again, pushing my tiptoes to their limits, this time clutching with all my strength. I tugged the knapsack to the side, toward the chasm, working to free it from the stout branch it had snagged on. I tugged once, twice, and suddenly felt weightless as the knapsack jerked free.

Falling, I dove toward the ledge. I screamed as my injured arm landed, but I couldn't let myself react. I had to concentrate solely on my good arm hanging over the ledge, the knapsack dangling from my fingers.

Cautiously, I rolled onto my back and placed the knapsack on my chest. The temptation to rest was canceled by the increased flow of blood from my arm. Nauseated, I opened the knapsack, pawed past my windbreaker and rain slicker, pushed the Ziploc bags of trail food aside, and found the plastic case of the first-aid kit.

I clumsily pried it open, dismayed to find only Band-Aids and two-inch-square pads along with scissors, antiseptic swabs, antibiotic cream, and a plastic bottle of Tylenol. None of that was going to stop the bleeding.

A tourniquet, I thought. I'll use my belt. I'll tighten it around my arm and…

But even as I unbuckled my belt, I remembered something I'd read about tourniquets being dangerous, about the risk of blood clots and gangrene if the tourniquet wasn't loosened at proper intervals.

What difference does it make? I thought. I'll bleed to death before I die from gangrene.

A pressure bandage. Whatever I'd read about tourniquets had warned that a pressure bandage was the safe way to stop bleeding, something that put pressure on the wound without cutting off the flow of blood. But where was I going to find something like that?

The bleeding worsened.

Perhaps because I was light-headed, I took more time than I should have to remember something else that might be in the knapsack. Once when Kate had been on a college trip to Paris, she'd sprained an ankle and had limped painfully from drugstore to drugstore, trying to find an Ace bandage, the wide, long elastic material you wrap around a sprain to give the injured area some support. Since then, whenever she traveled, she made sure to carry one in her luggage, and she always took care to pack one for me.

More dizzy, I used my right hand to search through the knapsack. Where is it? I thought. It isn't like Kate not to have packed one.

Damn it, this time she hadn't.

Desperate, I was about to dump everything out, when I noticed a bulge at the side of the knapsack. Struggling to clear my mind, I freed a zipper on a pouch and almost wept when I found a folded elastic bandage.

Working awkwardly with one hand, sometimes using my teeth to open packets, I cleaned the gash with antiseptic swabs, spread antibiotic ointment over it, and pressed several two-inch pads onto it. Blood soaked them. Hurrying, I wrapped the elastic bandage around my left forearm. Keeping it tight, circling layer upon layer, I saw blood tint each layer.

I urgently wrapped more layers, applying more pressure, worried about how little of the bandage remained. I prayed that the blood wouldn't soak all the way through. Two more layers. One. I secured the end with two barbed clips that came with the bandage. Then I stared at the bandage, shivering, concentrating to see if blood would soak through. For a moment, I feared that the pale brown of the bandage would become pink, about to turn red. I held my breath, exhaling only when a small area of pink didn't spread.

My watch's crystal was shattered, the hands frozen at ten after two. I had no idea how long I'd been on the ledge, but when I peered up through the vapor from the stream, the sun seemed to have shifted farther west than. I would have expected from the brief time since I'd fallen. Evidently I'd been unconscious longer than it seemed.

I stared up at the rim but still didn't see Petey and Jason. Give them time, I thought.

The trouble was, if I didn't get off the ledge soon, I was going to be in a lot worse trouble.

I wasn't an outdoorsman-I'd certainly proven that. But it wasn't possible to live in a mountain state like Colorado without seeing stories in the newspaper or on the TV news about the dangers of hypothermia. Hikers would go into the mountains, wearing only shorts and T-shirts. A sudden storm would soak them. If the temperature dropped, if the hikers were more than three hours from warm clothes and hot fluids to raise their rapidly dropping core temperature, they died from exposure.

Lying on the damp, chill ledge, I shivered. My hands and feet felt numb. If I don't get off this ledge soon, I thought, it won't matter that I stopped the bleeding. Hypothermia will kill me.

I tried to calculate how to climb up the almost sheer face to the next ledge and then up the slope of loose stones to the rim. I knew that my injured arm wouldn't support me. The only other way to get off the ledge was…

I stared down, trying to judge how the cliff led to the stream. It was a steep slope of outcrops, the ledge below me five feet away, the one after that twice as far. I didn't want to think about the obstacles farther down.

But the sun was already past the rim of the cliff. The bottom of the chasm was in shadow. Even though it was only late afternoon, darkness would come soon. The nearby mountains would block the sun earlier than I was used to. Once it was dark, I couldn't hope to be rescued until morning.

By then, I'd be dead.

The pain of movement was excruciating as I eased the knapsack onto my back, lay on my stomach, and squirmed over the edge. I dangled as far as my good arm would allow, then dropped.

The shock of landing jolted me to the bone. I almost fainted. Crawling over the side of the next outcrop, I ripped my shirt and scraped my chest. My lacerated knees showed through my torn jeans. Straining to control my emotions, I kept struggling downward. A few spots that looked impossible from above turned out to be deceptive, boulders acting like steps. Other spots that looked easy were terrifyingly difficult.