P1
1. uncompromising: firm, strict, rigid, stiff, unrelenting, inflexible, difficult to move along
2. an uncompromising track: a continuously rugged and steep path
3. saddle: a narrow stretch of hill connecting
4. I keep my head resolutely downwards: The path being rugged and steep, I had to keep my head downwards so as not to fall, although I wanted very much to look at the splendid surroundings.
5. perpendicularly: exactly upright
6. impenetrable: unenterable, impassable, thick, dense, sealed/ passable, enterable, accessible
7. I suppose it helped, but already I was getting beyond caring: I think the walking stick did help me a lot, but because the climbing was so much difficult that I could not pay any attention to that.
P2
1. We were now just below 8000 feet: We were now at the height of a little below 8000 feet above sea level.
2. nettles: a kind of plant
3. the two mountains above: Muhavura and Mgahinga
4. reduced to the appearance of littleness: Everything looked small against the background of the tremendous space.
5. tear off: to remove (something such as covering) from sth.