This series lists 998 geological features from around the world. The selection includes famous landmarks, rare formations, and lesser-known natural wonders.

Geological features are natural formations on or beneath the Earth’s surface, shaped by forces like volcanism, erosion, tectonics, and ice. They range from towering mountains and deep canyons to caves, geysers, and quiet river deltas. Some form in seconds, while others take millions of years. Studying them helps scientists understand Earth’s history, find water and minerals, and judge natural hazards.

Interesting and little-known facts about Geological features:

• Mount Everest grows about 4 millimeters taller every year because of tectonic uplift.
• The Mariana Trench reaches roughly 10,900 meters deep, deeper than Everest is tall.
• Iceland sits on the Mid-Atlantic Ridge, where two tectonic plates slowly pull apart.
• Some rocks in the Canadian Shield are over 4 billion years old, among the oldest on Earth.
• Lake Baikal in Russia holds about 20 percent of the world’s unfrozen fresh water.
• Yellowstone has more than 10,000 hydrothermal features, including about 500 active geysers.

Browse the alphabetical index below to find any feature quickly. Each page lists the name, region, characteristics, and Description of every feature.