noun, noun or participle which takes 'suru', intransitive verb
bivouac
A temporary overnight camp without tents, often used in mountaineering or military contexts. Can be used as a noun or as a suru-verb (ビバークする).
from French · from German Biwak
悪天候のため、登山隊は山小屋の手前でビバークした。
Due to bad weather, the climbing party bivouacked before reaching the mountain hut.
ビバークの経験がある人は、緊急時に落ち着いて行動できる。
People with bivouac experience can act calmly in an emergency.