Beautiful country, not unlike the temperate rainforests of our (US/Canada) Pacific Northwest. I’ve extricated myself from the head of a blind canyon in much the same way, but instead of stabbing into the ground I cut/dug/chiseled slots to use as hand/foot holds to “ladder” my way up a steep, unstable slope like that. Great to have a knife you can rely on without hesitation when the chips are down. (I’ve actually used that maneuver twice, once with a Basic 7 and another time with a Scrapper 5 LE.)