+ lava_flow + lava_spout + molten_rock + portrero PATTERN_WORD + sabbulonarium PATTERN_WORD + sink_hole + skerry PATTERN_WORD + steel_rock + swarth PATTERN_WORD + tectonic_plate + thujas PATTERN_WORD + top_soil + wildwood PATTERN_WORD + woodlot PATTERN_WORD + crawlway PATTERN_WORD + dragway .