�y��vlog

Worse, where the trail passes beneath the bowl, the steep headwall can shed ice and boulders when it is warmed by the afternoon sun.

An example of a building element that can be made off site more efficiently is the “headwall,” an architectural feature in hospitals that sits behind a patient’s bed and houses equipment to deliver oxygen, run fluid-collection systems, provide lighting and connect to the nurse call system.

Froshaug, who founded Saxe Structure Co. in 1994, was caught as the company prepared to pour a concrete headwall.

Such work is too dangerous in summertime, when the constant crackling of melting ice is punctuated by groans as slabs of permafrost, some as big as cars, shear off the headwall.

In 2014, Kseniia Ashastina slogged through 3 kilometers of mosquito-infested forest to reach the headwall’s edge.