I remember seeing a TV program folowing the adventures of some climbers attempting a remote peak somewhere. It was so remote and the terrain so difficult they needed special vehicles with humungous tyres to get there. I think it was omewhere in Russia. Anyway on the final climb one of the mountaineers had to turn back some 300 metres below the summit, because of altitude sickness. I think the summit was about 18,000 feet. So I have to wonder even if you do cope quite well with the altitude on your first high altitiude trip, is that any guarantee that subsequent trips will go as well? Are you once immune to altitude sickness always immune?
ed the 20 minute stop includes food man. Also that stop is a summit stop and I like to contemplate the view and if the timing is right watch the sun go down. The days of me racing on to the next summit or checkpoint are long gone. And frankly I don't miss them.