Vertical climbing refers to the act of climbing straight up, typically on steep surfaces like mountains or cliffs, using ropes and other safety equipment. Full definition
It is both challenging and picturesque, a nearly vertical climb of 330 meters. (inkaltitude.com)
Apes have feet that are modified to support their large bodies and to facilitate vertical climbing, thus allowing them to feed, nest, and seek safety in trees. (science.sciencemag.org)
«As suburban sprawl is replaced with vertical climbing, what will the future of America look like, and what part would we like to play in it as artists and as citizens?» (magazine.art21.org)