Geological Chronicle
Rimae Maclear is a lunar graben structure spanning 94 kilometers in length across the lunar basalt crust. Formed by structural faulting and crustal extension, the trench cuts through terrain within the Julius Caesar quadrangle (LAC-60).
Officially cataloged by the International Astronomical Union at selenographic coordinates 12.2308° latitude and 19.899° longitude, the rille designation notes: Named from nearby crater.