Related by context. Frequent words. (Click for all words.) 43 inhospitable terrain 42 harshest environments 41 wildernesses 39 terrains 38 rugged 38 prolonged droughts 38 deserts 38 desert 38 harsh environments 38 climates 38 wintry conditions 37 snowy winters 37 frequent droughts 37 Mountainous 37 Atacama Desert 37 sparsely inhabited 37 biodiversity hotspots 36 -# º C [001] 36 cold climates 36 climatic conditions 36 breathtaking scenery 36 Hindu Kush 36 breathtaking vistas 36 arid 36 harsh winters 36 mountainous 36 wettest summers 36 temperate zones 36 environments 36 fertile soils 35 Arabian desert 35 terrain 35 microclimate 35 mountainous terrain 35 temperature extremes 35 arid desert 35 rugged terrain 35 unforgiving 35 Himalayan peaks 34 volcanically active 34 -# ° F [002] 34 vast expanses 34 drained soils 34 sunless 34 inhospitable 34 mountains 34 Chihuahuan Desert 34 salt flats 34 ambient temperatures 34 freeze thaw cycles 34 Superstition Mountains 34 treacherous terrain 33 arid regions 33 spectacular scenery 33 mountainous regions 33 temperate climate 33 mountain ranges 33 Sahara Desert 33 temperate 33 redoubts 33 semi arid 33 river deltas 33 arguably 33 inland valleys 33 smoggiest 33 Arctic Circle 33 Himalayan Mountains 33 stunning scenery 33 Soil moisture 33 crags 33 tropical climates 32 pistes 32 Sandstorms 32 unimaginably 32 subzero 32 driest 32 Sierra Nevadas 32 Sonoran desert 32 colder climates 32 Massif 32 windiest 32 arctic 32 alpine meadows 32 tundra 32 geologically active 32 soils 32 Atacama desert 32 lowlands 32 Perennially 32 hellholes 32 winters 32 droughts 32 rugged mountainous 32 sheer cliffs 32 subfreezing 32 Empty Quarter 32 icecaps 32 Sahara desert 32 subtropical regions 32 countrysides 31 altitudes