A lake among tree branches and rocks. Surrounded by basaltic rocks around the water. Basalt is a common extrusive igneous volcanic rock formed from the rapid cooling of lava exposed at. Basalt describes the formation in a series of lavas flows. Grey black brown crushed and broken stones frozen gibber reg regs geology geological clinkers scoria cinder cone hill pyroclastic material sunrise sunup at dawn twilight early morning day tree branches before after time trees wood woods sun horizon rocks cinematic background landscape view nature natural bright true color simple sunset sundown afternoon ambience area solidified shield dome andesitic rhyolite field mere lough wetland pond water UHD 3840X2160.