More ideas from Anıl
Mount Sinabung spews a column of hot gas and ash skyward, as seen from Tigapancur village in Karo district, on November 14, 2013. (Ulet Ifansasti/Getty Images) - Via In Focus:

Mount Sinabung spews pyroclastic smoke as seen from Tigapancur village in Karo district on November 2013 in Medan, Sumatra, Indonesia. Up to residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung.

Geologic Folds in the Lower Ugab valley in Namibia - photo from Wow!

ggeology: “Geologic Folding // Lower Ugab Valley, Namibia ” Note how some of the layer thicknesses change as you approach the hinge of the fold - could be some deformation happening within the layers.

Raplee Ridge, part of the Monument Upwarp in southeastern Utah, is a long, narrow, folded anticline that formed about 70 million to 50 million years ago.

"Raplee Ridge Near Mexican Hat, Utah" - someone. I think I have a photo that we took of Mexican Hat somewhere; a rock that looks like a Mexican hat.

Mexico's Cave of Crystals contains some of the world's largest known natural crystals—translucent beams of gypsum as long as 36 feet (11 meters). A new study says the gems reached their vast sizes thanks to a peculiar combination of consistent volcanic heat and a rich watery mixture.

Cave of the Crystals or Giant Crystal Cave is a cave connected to the Naica Mine 300 metres ft) below the surface in Naica, Chihuahua, Mexico. The main chamber contains giant selenite crystals (gypsum, some of the largest natural crystals ever found.