Erupting volcano - Most of the geodes that we find today were actually created when ancient Volcanoes erupted! As the lava cooled, air bubbles became trapped inside creating empty pockets. Over millions of years these pockets filled with the minerals
°Pahoehoe Lava - One of the more interesting types of pahoehoe lava is called ropey pahoehoe & looks like a series of twisted ropes spaced evenly along the ground. The twisted ropes may be fairly straight, or may loop & wind in & out much like a fingerpr
Lava fountain frozen during eruption. The rarest lava on Earth, has some unusual properties. Unlike most lavas, this is a carbonate rather than a silicate, and erupts from Oldoinyo Lengai, a volcano in Tanzania.