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Vallis Alpes (latin for"Alpine Valley") is a lunar valley…It extends 166 km from the Mare Imbrium basin, trending east-northeast to the edge of the Mare Frigoris. The valley is narrow at both ends and widens to a maximum width of about 10 km along the middle stretch. (Source Wikipedia)
Vallis Alpes is L19 in Lunar 100. Please, see link below