As promised, I have more photos of Volcán Cerro Negro (I’m still looking for some video). The photo below shows the variety of rock size on the hike up the volcano, as well as the underside of the sleds.
Unfortunately, Pierre and I didn’t take many pictures of the actual descent, since we were preparing ourselves and didn’t think we’d be able to safely use our cameras while sledding. What we did photograph was the natural beauty of the volcano and its surroundings.
Here’s a more full explanation of how the sledding ended: The transition from the slope to level ground wasn’t as jolting as I’d feared, and I skidded to a stop just a meter or two from the slope without wiping out. Standing up, I shook the gravel out of my shorts and shirt, looking around for Pierre, who was pouring stones out of his shoes nearby. As long as you can sit straight in the middle of a sled, it seems that you can slide down the volcano with only basic protection and get away with only having to wash up afterwards.