Mount Thor: The mountain with Earth's longest vertical drop

Mount Thor is a remote mountain in Canada with the largest vertical drop in the world. The mountain is just under 5,500 feet (1,675 meters) tall — but its most striking feature is its west face, which is so steep that it actually curves back on itself.

An object falling from the top of Mount Thor's western cliff would plummet 4,100 feet (1,250 m) before hitting anything. If a human were to jump off the summit and not deploy a parachute, they would remain in the air for a terrifying 26 seconds.

Mount Thor's west face has an average angle of 105 degrees, which means that the mountain has an overhang of 15 degrees. The western face is, as a Facebook post put it, "steeper than vertical" — making the mountain look like it was cleaved unevenly in half.

Mount Thor is named after the Norse god of thunder. It is located on Baffin Island, the largest island in the Canadian Arctic Archipelago.

Related: Savonoski Crater: The mysterious, perfectly round hole in Alaska that scientists can't explain

The mountain sits on the eastern edge of the Canadian Shield, a massive geological formation with rocks that are at least 1 billion years old. But the peak belongs to the Arctic Cordillera mountain range, which stretches from Ellesmere Island to Labrador.

Mount Thor is made of solid granite that formed between 3.5 billion and 570 million years ago. The mountain was carved over millennia by glaciers, whose repeated advance and retreat between 18,000 and 1,500 years ago eroded the west face into the C-shape we see today.

Despite its remote location, Mount Thor is a popular destination for rock climbers. American astrophysicist Lyman Spitzer and his mountaineering partner Donald Morton made the first recorded ascent of Mount Thor in 1965, but the first ascent of the mountain's west face wasn't until 1985 — and that took 33 days.

Discover more incredible places, where we highlight the fantastic history and science behind some of the most dramatic landscapes on Earth.