Reynisdrangar basalt sentinels
Las Grietas: Miniature Canyons of Lanzarote
Temple in floodplain
Volcano-Tectonic Interaction
Polarized light photomicrograph of a thin section of brazilian agate.
Hello darkness, my old friend
Satellite image of the tree-like village
Penitentes' labyrinth
Connection to the deep crust
Permafrost melt and glacial retreat outpacing human expectations.