A close look at one of the large pieces of spatter thrown onto the rim of HalemaÊ»umaÊ»u Crater by today’s explosion (keys are for scale). The spatter hit the ground in a semi-fluid state, deforming on impact. The small, multi-colored particles incorporated in the spatter are fragments of the altered crater wall that collapsed into the lake, while the brown spatter represents fresh lava from the lake. Photo taken Tuesday, April 28, 2015 courtesy of USGS/HVO