Wandering over hills and mountains.
When wintry storms montivagent outpour
Their pluvious treasures from the deep purloined.
J. F. Pennie, Rogvald: An Epic Poem, in Twelve Books, G. and W. B. Whittaker
Aircraft are all nubivagant, gorillas are all nemorivagant, and a holiday in Snowdonia could be described as a montivagant weekend.
Mark Forsyth, The Horologian: A Day’s Jaunt Through the Lost Words, Berkley (2012)
“Mont-” meaning mountain.
“-vagant” stems from Latin vagārī or Latin vagō, which means to wander. Same etymology as vagrant and vagabond.