Related by context. Frequent words. (Click for all words.) 61 fog blanketed 57 basalt rock 57 gray haze 57 powdery sand 56 Dense smoke 55 Thick clouds 55 sparse vegetation 55 cumulus clouds 55 temperature inversions 55 evergreen forests 55 hummocks 55 sandstone formations 55 temperate forests 55 lava tubes 55 scrublands 55 greenish brown 54 billowing clouds 54 humid tropical 54 inversion layer 54 Valles Marineris 53 Saharan dust 53 temperature inversion 53 sooty mold 53 brownish red 53 cirrus clouds 53 decaying vegetation 53 tropical oasis 53 greenish yellow 53 grassy meadows 53 chalky white 53 smoke plumes 53 brownish gray 53 Martian dust 52 loess 52 Asbestos fibers 52 Particle pollution 52 grassy plains 52 inky blackness 52 atmospheric pollutants 52 hazy skies 52 temperate rainforest 52 haze 52 rocky outcroppings 52 North Pacific Gyre 51 pine pollen 51 pyroclastic 51 polar vortex 51 soot 51 dense 51 dense canopy 51 plumes 51 steam vents 51 tropopause 51 soot particles 51 pebbly 51 Meteor showers 51 reddish hue 51 leafless trees 51 granite cliffs 51 extinct volcanoes 51 equatorial waters 51 polar craters 51 reddish 51 yellowish orange 51 acrid odor 50 grayish 50 Sulfur dioxide 50 heavily cratered 50 greenish gray 50 evergreen foliage 50 geologic formation 50 tall reeds 50 volcanic plume 50 erupting volcanoes 50 flammable vegetation 50 translucence 50 waxy substance 50 majestic scenery 50 Thick fog 50 Chugach Mountains 50 purple blooms 50 cirrus 50 undersea volcanoes 50 photosphere 50 moonlets 50 blackish 50 reddish color 50 forest canopies 50 rolling sand dunes 50 deciduous forests 50 Gusev crater 50 stippled 50 cottony 50 lush rainforests 50 plume 50 upwellings 50 fumaroles 50 carbonate minerals 50 stellar nurseries 50 spectacular sunsets 50 tinder dry vegetation