Related by context. Frequent words. (Click for all words.) 74 lava 66 magma 66 lava flow 65 molten rock 65 volcanism 64 volcanoes 64 volcanic activity 63 eruptions 63 volcanic 61 volcanic eruptions 61 caldera 61 volcano 59 molten lava 58 volcanic rock 56 active volcanoes 56 Kilauea 56 hydrothermal 56 volcanic eruption 55 eruption 55 crater 54 basalt 54 plate tectonics 53 rock formations 53 glaciers 53 volcanic debris 53 sedimentary rock 52 comets 52 glacier 52 volcanos 52 plume 52 plumes 52 geysers 51 seismic activity 51 craters 50 geologic 50 volcanic rocks 50 meltwater 49 lahar 49 Volcanic 49 Mayon volcano 49 comet 49 volcano erupted 49 Saturn rings 49 supernovae 49 mudflow 49 Merapi 48 cosmic rays 48 quakes 48 landslides 48 sediments 48 lava dome 48 sedimentary 48 gullies 48 hot springs 48 upwelling 48 geologically 48 water vapor 48 earth crust 47 temblors 47 auroras 47 hydrothermal vents 47 calcite 47 solar flares 47 sedimentary rocks 47 supernovas 47 Earth crust 47 asteroids 47 tectonic 47 outcrops 47 subduction zone 47 neutron star 47 ridges 47 supernova 47 volcano eruption 47 Enceladus 46 mountainsides 46 gamma ray burst 46 distant galaxies 46 galaxies 46 meteor shower 46 tsunamis 46 glacial ice 46 corona 46 quasar 46 Phivolcs 46 seismic waves 46 meteor 46 icebergs 46 rockslides 46 quasars 46 rocky planets 46 neutron stars 45 meteors 45 sunspot 45 stalactites 45 Indonesian volcano 45 shear zones 45 earthquakes 45 volcanologists 45 methane 45 boulders