CAVES AND CAVERNS
Naturally formed spaces extending into Earth's surfaces of varying types, including solution caves exhibiting an array of intricate formations, lava tubes, wind caves, sea and ice caves, and sandstone rock sh
GEOTHERMAL FEATURES
Steaming hot springs, gushing geysers, bubbling mud pots, fuming fumaroles, towering travertine terraces, and thermal pools fueled and heated by subsurface magma or Earth's goethermal gradient
GLACIERS
Rivers of ice flowing from alpine peaks and mountain ice fields in the form of valley, tidewater, piedmont, hanging, and cirque glacier types
ICE FORMATIONS
Frozen cascades rooted from mountain cliff tops, boulders encased in ice from the spray of waterfall, and frost and ice crystals in unique forms and shapes amongst shoreline sea caves gripped by winter's deep
ROCK FORMATIONS
Geologically formed bodies of rock distinctly shaped out of natural processes in the forms of buttes, mesas, cliffs, arches, pillars, spires, domes, hoodoos, pinnacles, sea stacks and more
SAND DUNES
Shifting landforms comprised of mounds of sand, shaped by wind and water and molded into different types of dune systems classified as barchan, linear, transverse, parabolic, and star shaped dunes
TIDE POOLS
Shallow pools of water left along rocky intertidal ocean coastline at low tide, containing specialized ecosystems of sea life, including mollusks, sea stars and sponges, and aquatic plants
WATERFALLS
Streams of water dropping over rocks and cliffs, categorized by shape and volume as a plunge, horsetail, fan, punchbowl, block, tiered, segmented, cascade, slide, or ribbon waterfall type
