By then, it was almost 1:30. Kate had packed a lunch in a cooler: chicken, beef, and peanut butter sandwiches, along with soft drinks, apples, and little packages of potato chips. Jason didn't touch the apples. Otherwise, he wolfed everything down, the same as Petey and I did. We saw fish splashing in the lake but decided to get our poles out later. For now, there was plenty to do, exploring. We put our lunch trash in a bag, locked it in the car, and set out, hiking to the left around the lake.

"I remember there was a cave up there." I pointed above the aspens. "And lots of places to climb."

Petey yelled to Jason, who was running ahead of us. "Do you like to climb?"

"I don't know!" Jason turned to look at us, continuing to run. "I've never done it!"

"You're going to love it!"

The lake was about a hundred yards across. We reached the other side and found a stream that fed into it. The stream was swift from the spring snowmelt, too wide to cross, so we followed its cascading path up through the aspens, the roar of the water sometimes so loud that we couldn't hear one another.

Even though we were three thousand feet higher than the altitude of five thousand feet we were used to in Denver, the thin mountain air didn't slow us. If anything, it was invigorating. It was like inhaling vitamins. Stretching my legs to climb over fallen trees or to clamber on and off boulders, I felt such pleasure from my body that I criticized myself for not having taken time from work to do this earlier.

Across the stream, above us, a deer moved, its brown silhouette stiffening at our approach, then bounding gracefully away through the white trunks of the aspens. With the noise from the stream, it couldn't have heard us coming, I thought. It must have smelled us. Then another silhouette stiffened and bounded away. A third. Even with the noise from the stream, I heard their hooves thunder.

Soon we reached where the stream cascaded from a high, narrow draw that was too dangerous to go into. We angled to the left, following a steep upward trail that had hoof marks on it. The trail veered farther to the left, maintaining a consistent level along a wooded slope, so predictable that when a sunlit outcrop above us attracted our attention, we decided to explore. Getting to it was more difficult than it appeared. At one time or another, both Petey and I slipped on loose rocks underfoot. We'd have rolled to the bottom, scraping our arms and legs, maybe even breaking something, if we hadn't managed to clutch exposed tree roots. By contrast, Jason scurried up like a mountain goat.

Breathing hoarsely, Petey and I crawled over the rim and found Jason waiting for us on a wide slab of rock that provided a view of the stream below us and the chasm through which it churned. Two hundred feet above it, we were far enough from the roar for me not to need to shout when I warned Jason, "Stay away from the edge."

"I will," he promised. "But, gosh, this is totally neat, Dad."

"Beats watching television, huh?" Petey said.

Jason thought about it. His face assumed an expression of "I wouldn't go that far."

Petey laughed.

"Where's that cave you mentioned?" Jason asked.

"I'm having trouble remembering," I said. "Somewhere on this side of the stream is all I know for sure."

"Can we look for it?"

"Absolutely. After we take a break."

I settled onto the stone slab, unhooked my canteen from my belt, and took a long swallow of slightly warm, slightly metallic-tasting, incredibly delicious water. The park ranger I'd spoken to on the telephone had emphasized that we needed to take canteens with us and knapsacks containing trail food, a compass and a topographical map (neither of which I knew how to use), a first-aid kit, and a rain slicker in case the weather turned bad. "Dress in layers," she'd advised. "Keep a dry jacket in your knapsack." I'd already put on my denim windbreaker before we left the car. Now the hike had so warmed me that I took off the jacket and stuffed it into the knapsack.

"Anybody want some peanuts and raisins?" I asked.

"I'm still full from lunch," Petey said.

Jason looked uncomfortable.

"What's the matter?" I asked.

"I have to…"

It took me a moment to understand. "Pee?"

Jason nodded, bashful.

"Go around that boulder over there," I told him.

Hesitant, he disappeared behind it.

My parental obligations taken care of for the moment, I stepped forward to admire the chasm. The stream tumbled down a series of low waterfalls. Spray hovered over it. How had Jason described the view? "Neat"? He was right. This was totally neat.

Behind me, he suddenly shouted, "Dad!"

Something slammed my back with such force that it took my breath away. I hurtled into space.

The drop sucked more of my breath away. The little that was left jolted from my mouth when I struck loose stones. Avalanching with them, rolling sideways, I groaned. Abruptly, I hurtled into the air again, plummeting farther, my stomach squeezing toward my throat. I jerked to an agonizing stop, my left arm stretching as if it were about to be ripped from its socket. My arm slipped free of something. I dropped again and hit something hard. Cold mist swallowed me. Darkness swirled.

When my eyelids slowly opened, black turned to gray, but the swirling continued. Pain awoke throughout my body. Delirious, I took a long time to realize that the gray swirling around me was vapor thrown up from the cascading stream. The roar aggravated my dizziness.

I felt that I was breathing through a cold, wet washcloth. Gradually, I understood that my left arm was across my nose and mouth. My shirtsleeve was soaked from the vapor that the thundering stream tossed into the air. Then I trembled, seeing that my sleeve was wet from something besides the mist. Blood. My arm was gashed.

Alarm shot through me. I fought to raise my head, and discovered that I was on my back on a ledge. Below was a fall of what I judged to be I50 feet. A series of outcrops led sharply down to the roaring stream.

Jesus, what had happened?

I peered up. The vapor made it difficult for me to see the top of the cliff. Nonetheless, through the haze, I could distinguish a long slope of loose stones below the rim. The slope had saved my life. If I'd fallen directly to where I now lay, my injuries would have been catastrophic. Instead, I'd rolled down the slope, painfully reducing the length of the fall. But beneath the slope of loose stones, there had been a ledge over which I'd tumbled to the ledge I'd landed on, and the distance between them was about twenty feet. A potentially lethal drop. Why wasn't I dead?

My knapsack dangled above me. It was caught on a sharp branch of a stunted pine tree that had managed to grow from the side of the cliff. I remembered stuffing my windbreaker into the knapsack and hanging the knapsack over my left shoulder before I'd walked over to peer into the chasm. The branch had snagged the knapsack. The sharp pain in my left shoulder indicated the force with which I'd been jerked to a stop. My arm had slipped free from the strap. I'd fallen a body length to this ledge. Luck was all that had saved me.

Every movement excruciating, I strained to sit up. My mind tilted, as if ball bearings rolled from the front of my skull to the back. For a moment, I feared that I'd vomit.

"Jason!" I tried to yell. "Petey!"

But the words were like stones in my throat.

"Jason!" I tried harder. "Petey!"

The roar of the stream overpowered my voice.

Don't panic, I fought to assure myself. It doesn't matter if they can't hear me. They know where I am. They'll help me.

My God, I hope they don't try to climb down, I suddenly thought.