Atacama Desert vs. Mount Washington? Top 10 Places With the Most Extreme Weather & Geography on Earth (2026)

Blocked from Amazonian moisture by the high Andes to the east and capped by cold Humboldt Current temperature inversions off the Pacific coast, Chile's Yungay and Quillagua basins represent the driest non-polar desert on Earth and host ESO's flagship optical and submillimeter observatories.

Perched atop steep limestone cliffs facing the Bangladesh plains in Meghalaya, Mawsynram intercepts warm, moisture-saturated Bay of Bengal monsoon air forced abruptly upward by the Khasi Hills. Residents weave living Ficus elastica root bridges that strengthen rather than rot in relentless downpours.

Located ~125–130 meters below sea level at the Afar triple tectonic junction in northern Ethiopia, Dallol combines relentless year-round heat (34.6°C daily mean, 41.2°C average daily high) with magma-heated hypersaline springs rich in iron chlorides, sulfur, and toxic gases.

Enclosed on three sides by steep Andean ridges, warm moisture evaporating off Venezuela's Lake Maracaibo collides nightly with cool mountain katabatic breezes over the Catatumbo River marshes—generating towering convective cells tracked by NASA's TRMM Lightning Imaging Sensor as Earth's #1 lightning hotspot.

Ringed by mountain chains in Russia's Sakha Republic (Yakutia), dense radiative winter air pools inside the Oymyakon and Verkhoyansk basins under Siberian High anticyclones. Permanently inhabited villages operate schools and cattle farms despite -67.8°C (-90°F) lows (second in the Northern Hemisphere only to unmanned Klinck, Greenland at -69.6°C).

Formed where the Pacific Plate plunges beneath the Mariana Plate ~200 miles southwest of Guam, Challenger Deep reaches ~10,935 meters (35,876 feet) according to NOAA Ocean Exploration multibeam surveys. Hydrostatic pressure tops 109.7 MPa (~15,900 psi), requiring titanium pressure spheres and syntactic foam.

Clinging to a narrow northern coastal shelf beneath 2,062-meter Queen Mary's Peak—an active shield volcano in the Roaring Forties—Edinburgh of the Seven Seas houses roughly 245–250 residents. With no airport, every visitor and supply crate arrives via a six-day South Atlantic voyage from Cape Town.