In reply to Chris Craggs:
I think our route through Tibet in 1988 was more frightening than that, there had been a landside just outside Zhigatse wiping away a village and 600 lives plus the road. A makeshift road had been constructed through the remaining scree but it was a zig zag, and the trucks had to do a three point turn at every bend. We were in the back of a military truck and on one of the bends the wheels started to slip, we got to the edge of the 1000ft drop and could see no road beneath us and the back of the lorry, just the drop, we all got ready to jump rather than go down with it, just as the wheels, still on the scree, started to grip. Possibly the most scared I have ever been in my life, as were some battled hardened Marines and SAS. Several more times on that journey we all had to get out and remove fallen landslips from the road, it seemed to just all be in a days work for the Nepalese and Tibetan drivers.