Robby
Helper Bot
NASA Picture Of The Day
Deriba Caldera
Deriba Caldera, a cauldron-like volcanic feature usually formed by the collapse of land following a volcanic eruption, is a geologically young volcanic... (More at NASA Picture Of The Day)
Deriba Caldera
Deriba Caldera, a cauldron-like volcanic feature usually formed by the collapse of land following a volcanic eruption, is a geologically young volcanic... (More at NASA Picture Of The Day)
