Hraunsgil is a columnar basalt valley, scanned along one 1,200 m line from 4 stations. The page opens on the scan. Scroll, and it gives way to the photograph as you walk the line to the prism.
Station 01 · Valley mouth12 Sep 2026
The first set-up stands on the valley floor, 40 m in from the road end. From here the scanner sees both walls and 600 m of gravel in one 6 minute sweep.
Station 02 · The colonnade13 Sep 2026
The south wall is one lava flow that cracked into columns as it cooled. The scan resolves every joint wider than 4 mm, so each column is measured, not guessed.
Station 03 · Joint set14 Sep 2026
Sorted by edge count, most column tops are hexagons. Low sun from the east at 07:40 puts a shadow in every joint, so the photographs were all taken in that half hour.
Station 04 · The prism15 Sep 2026
A glass prism on a fixed column top. Every set-up shoots it first, so the 4 scans lock to one point within 3 mm. It stayed up until the last sweep.
Drag the line. The scan is plotted in your browser from the same frame the camera holds: 1 point per sample, sized and lit by brightness, with the hi-vis tripod kept orange.
Station 04, fixed lens, looking down the valleyArrow keys move the split, Shift for larger steps
Line A ships as one registered cloud of 10.2 M points, with the 4 station photographs and the control report.