Pretty quickly they were strapped in and looking like they were reconsidering their wills—all except for one tubby little guy named Arnold, who continued to roll up and down the aisle like a bowling ball, finally inserting himself into the cockpit so he could shoot over the pilots’ shoulders. “We are landing at Lukla,” he announced to his camera’s mike in a deep fakey voice, like the narrator of a bad travelogue. “Looks impossible, but our pilots are calm.”

Despite him we landed safely. Unfortunately one of our group then tried to film his own descent from the plane, and fell heavily down the steps. As I ascertained the damage—a sprained ankle—there was Arnold again, leaning over to immortalize the victim’s every writhe and howl.

A second plane brought in the rest of our group, led by Laure and my assistant Heather. We started down the trail. For a couple of hours everything went well—the trail serves as the Interstate Five of the region, and is as easy as they come. And the view is awesome—the Dudh Kosi valley is like a forested Grand Canyon, only bigger. Our group was impressed, and several of them filmed a real-time record of the day.

Then the trail descended to the banks of the Dudh Kosi river, and we got a surprise. Apparently in the last monsoon a glacial lake upstream had burst its ice dam, and rushed down in a devastating flood, tearing out the bridges, trail, trees, everything. Thus our fine interstate ended abruptly in a cliff overhanging the torn-to-shreds riverbed, and what came next was the seat-of-the-pants invention of the local porters, for whom the trail was a daily necessity. They had been clever indeed, but there really was no good alternative to the old route; so the new trail wound over strewn white boulders in the riverbed, traversed unstable new sand cliffs, and veered wildly up and down muddy slides that had been hacked out of dense forested walls. It was radical stuff, and even experienced trekkers were having trouble.