Related by context. Frequent words. (Click for all words.) 59 lava 56 deep gorges 55 lava flows 54 boulder strewn 53 lava tubes 53 volcanic rock 53 pyroclastic flow 53 extinct volcano 53 crater 52 hillocks 52 lava rocks 52 volcanic crater 52 spewing lava 52 boulders 51 granite boulders 51 Valles Marineris 51 grassy slopes 50 towering cliffs 50 mountainsides 50 rock outcroppings 50 thawing permafrost 50 molten rock 50 igneous rock 50 basaltic 50 hillsides 50 massif 49 talus 49 spewed ash 49 sandy 49 limestone cliffs 49 hillside 49 sedimentary rock 49 crater rim 49 volcanic 49 pebbly 49 scarps 49 basalt 49 lithosphere 49 stalagmites 49 craggy mountains 49 lahars 49 volcanoes 49 buttes 49 limestone formations 49 rocks 48 magma chamber 48 limestone caves 48 leafless trees 48 jagged peaks 48 Kilauea Volcano 48 deep ravines 48 icy crust 48 rock outcrops 48 glacier 48 dry riverbeds 48 rock outcrop 48 stalactite 48 graben 48 barren hills 48 lush vegetation 48 glacial ice 48 glacial till 47 riverbeds 47 active volcanoes 47 lakebed 47 Pacaya volcano 47 Kelud 47 lava flow 47 rocky outcrops 47 volcano 47 mountain slopes 47 mountainside 47 sandstone cliffs 47 rocky slopes 47 Martian equator 47 streambeds 47 coconut groves 47 rocky cliffs 47 gullies 47 pumice 47 hillock 46 limestone cave 46 granite peaks 46 ash plumes 46 outer crust 46 molten lava 46 creekbed 46 caliche 46 towering peaks 46 dense brush 46 oceanic crust 46 rocky slope 46 caldera 46 Volcano erupts 46 active volcanos 46 steep canyons 46 rock outcropping 46 earthen wall 46 stupas 46 lunar soil 45 landforms