Reports

Lunar Hadley Rille: Considerations of Its Origin

Science  14 May 1971:
Vol. 172, Issue 3984, pp. 722-725
DOI: 10.1126/science.172.3984.722

Abstract

Geomorphology, topographic configuration, comparisons with terrestrial analogs, and considerations of the chemical and physical characteristics of mare lavas indicate that the Hadley Rille is a lava channel. Some of the structure was roofed to form a lava tube, parts of which have subsequently collapsed.