1) giant sized rock slide, they were about the size of the old tube computer monitors before flat screens. but not only the size, by the time they reached us 4 secs after we heard the noise, they were flying downhill and had accelerated from 1000 ft elevation above us. They sounded like rumbling in the movies with a buffalo stampede. I hid behind a big tree, friend body dived in a trench (bad decision)
after thought it was obvious, but as it was happening, did not know what or where the rocks were coming from. I assumed the horses would be running down the single track trail we were climbing. Turned out that gravity prefers straight lines. Up there going straight down. perpendicular to the switchbacks.
Calling it rock SLIDE is an understatement, they were high speed flying boulders from a catapult.
2) near death: everything I did between age 16 to 25.
no gear, no water, no food, no experience, no map, no hat, no pack, no phones back then. only a Milky Way bar and a Cherry Coke. just go and explore mountains and canyons, till I get tired 6 hrs later, then figure out my way back starving, thirsty, disoriented, headache, altitude sickness, sunburnt, blisters, with a stupid smile on my face.
Since those days, I conservatively calculate a risk assessment, my existing gear and skill to mitigate the risk, the likely probability of bad luck and Murphy's law. Then I abort or adjust to safety. My motto these days is that the mountains will still be there, I cancel that day, or modify the route and return another time.