http://www.newsweek.com/kilauea-volcano-lava-boats-float-down-molten-rivers-1004970

The massive lava rivers on Hawaii’s Big Island are still gushing from an active volcano, and are now causing the land to collapse and float downstream. From a distance, the chunks of Earth that float down these lava streams look like boats, so scientists began calling them “lava boats.”

One gigantic lava boat was spotted in Kapoho, where an onlooker captured a video and shared it online. The video shows a chunk of land, about 20 feet by 20 feet, slowly drift down the lava stream, seemingly immune to the immense heat. After a few moments, the mass of land splits apart to show its glowing molten center and crumbles before disappearing into the volcanic stream.