#lava

Rootless Cones: Unique Volcanic Structures Without Lava These formations resemble volcanic craters, but there's no lava…

Rootless Cones: Unique Volcanic Structures Without Lava These formations resemble volcanic craters, but there's no lava involved. The photo shows rootless cones, or rootless craters, on the shores of Lake Mývatn in northern Iceland. These unusual structures are often found in regions of active vol…