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Hadley from Space

Molten basaltic lava cut this channel, known as Hadley Rille, through the surface of the moon. The channel winds along the base of the Apennine Front, one of the sites explored by the Apollo 15 astronauts. It measures 1500m (nearly 1 mi) wide, 400m (433 yards) deep, and 100 km (60 miles) long. The walls of the channel are very steep, with slope angles of 25 to 30 degrees.

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