A 3D model of a conduit under Hansbreen (Hans Glacier), Svalbard

A low-resolution 3D model of a subglacial conduit derived from a photographic survey and structure-from-motion. Photographs were collected along ~125 m of subglacial conduit from the base of a moulin. Photos were processed with 18 (sparse) ground control points which supported scale, orientation, and alignment in world coordinates. The roof was not captured in all locations, causing an "open roof" in sections where its location is not known.