Askja volcano crater lake in Iceland | I am Reykjavik
Guide to Iceland - Hnausapollur Lake in the Icelandic Highlands is a dazzlingly blue body of water in a volcanic crater which formed about 11 thousand years ago 🌋💧💙 #guidetoiceland | Facebook
This Otherworldly Volcanic Crater Lake Is a Geological Jewel in Iceland's Magnificent Landscape | The Epoch Times
See The Many Icelandic Volcanoes and Their Craters | Travel Earth