Originally posted by Lacrimosa:

Yup. That's why you should always have 100+ in the mountains

I would say "just" 100+ is too lenient. While 100+ is technically survivable for any single fall, you're NOT guaranteed to strike the ground only once in the mountains.
Bounce sideways on an angled rock or terrain protrusion that strips a full 100 and then catapults you further down... and you could easily be looking at a total 150+ fall damage, for a single jump.