Cave with hot water, Grjótagjá, Mývatn, Iceland

size: 557080
sha1: 0a358c2ccba1518a3d16c6ef4cbcbc3b36950abe
sha256: d61e8ecaaefa0a473c3cb5d9454f8be873f4c00732a0445567f7388992152b92

size: 454597
sha1: bc5562a303cd5c2f46ae4892a4be084bd12e7162
sha256: 65dc2c407f9483f9e29080d179eaa46f3d82b9650cf8b9e57b59e7e193f4c574