According to My Navi news, manga "Yama no Susume" was announced to get a TV anime adaptation. The production studio is 8bit
and it will be aired in 2013.
Yama no Susume manga official website
Manga "Yama no Susume" has been serialized in Monthly Earth Star magazine and it's about two girls, Aoi and Hinata, who challenge climbing to see the sunrise from the mountain top.
Source: My Navi News
Yama no Susume