The surroundings of Viking 1 Lander (2)

Commenti originali:"Bedrock exposures are among the most provocative features at the Viking 1 landing site. Bedrock, of course, refers to a body of solid rock that underlies a layer of soil or unconsolidated sediment. On the Moon, bedrock is almost everywhere covered by a thick layer of impact debris. Only at the Apollo 15 site were astronauts Dave Scott and Jim Irwin able to chip off samples of bedrock from layers exposed in the wall of the Hadley Rille".