Related by context. Frequent words. (Click for all words.) 54 sparsely inhabited 53 volcanically active 53 steep slopes 51 glaciated 51 geologically active 49 seismically active 49 boulder strewn 48 landform 48 biologically diverse 48 mountainous 47 active volcanoes 47 river deltas 46 ridge 46 rockslides 46 outcroppings 46 ridges 46 rocky outcrops 45 biodiverse 45 mountain ridges 45 Mount Kelud 45 basaltic 45 volcanoes 45 rock outcrops 45 heavily forested 45 landmasses 45 hilly 45 karst 44 mountain ranges 44 sparsely populated 44 ridgetops 44 hillsides 44 glacial lakes 44 geologically 44 topography 44 seismically active regions 44 seismic activity 44 tectonic plates collide 44 Volcanic eruptions 43 ecologically fragile 43 landslides 43 subduction zone 43 steep cliffs 43 limestone caves 43 roadbeds 43 lowlands 43 highlands 43 ecologically sensitive areas 43 landmass 43 hills 43 freshwater wetlands 43 active volcanos 43 forested 43 fragile ecology 43 thickly wooded 43 volcanos 43 rocky outcroppings 42 archipelagic 42 volcano 42 boulders 42 barrens 42 coastal 42 steep hillsides 42 rocky cliffs 42 subduction zones 42 mountain 42 earthquakes 42 massif 42 biodiversity hotspots 42 Kelud 42 Quake shakes 42 landforms 42 ecologically sensitive 42 treeless 42 topographically 42 northernmost tip 42 deep ravines 42 ridge tops 42 volcanic islands 41 mountainsides 41 mountain slopes 41 geologists 41 caldera 41 southernmost 41 basalt 41 landslips 41 faultline 41 San Andreas Fault 41 mountain peaks 41 ridgelines 41 volcanic 41 steep canyons 41 continental crust 41 manmade 41 tectonic plate 41 earth tremors 41 tectonic 41 mud slides 41 limestone cliffs 41 Kilauea Volcano 41 Santa Ana Mountains 41 lava tube