The third and final EVA of Apollo 15 brought the astronauts to the edge of Hadley Rille (lower left). Disturbed regolith is observed along the crater rim at station 9 and at the edge of the rille at station 9A. Rover tracks are visible between stations 9A and 10. Image width is 520 m, 0.52 m/pixel, LROC NAC M111571816R [NASA/GSFC/Arizona State University].

A sinuous rille created by a lava flow snakes around the base of a massif in the Prinz-Harbinger region on the Moon. Image width is 1.46 km, LROC NAC frame M102429075L [NASA/GSFC/Arizona State University].

A junction between the rims of three craters on the floor of Peary crater near the lunar north pole is evident in this NAC image (M101955359L). Note the mottled texture of the regolith. Peary is a key exploration site for future astronauts due its proximity to potential resources. Image width is 2.68 km [NASA/GSFC/Arizona State University].

A bottleneck at the start of the lunar sinuous rille within Vallis Alpes formed several morphologic features including (from left to right) a lava pond, a breached dam, and an island in the rille. Image width is 3.3 km, image resolution is 1.68 m/pixel [NASA/GSFC/Arizona State University].

Diverse textures on the floor of Saha E on the lunar farside. Image width is 1.08 km [NASA/GSFC/Arizona State University].

Cracks form in the impact melt sheet on the floor of Necho Crater. Image width is 1.04 km [NASA/GSFC/Arizona State University].

Sinuous rille winding its way across a much larger rille in the heart of the Aristarchus Plateau, image width 1.76 km [NASA/GSFC/Arizona State University].

LROC NAC frame closeup of crater wall and terrace in Bürg crater (45.0°N, 28.2°E). The outer rim of the crater is along the right side of the frame. Image width is 1.62 km [NASA/GSFC/Arizona State University]

A mare-highlands boundary in northern Mare Frigoris. Image width is 1.8 km [NASA/GSFC/Arizona State University].