It's also a geological wonderland, a birder's paradise and an area rich in local history and legend.

The most popular serious hike (a six-hour round trip; take a guide) is to the Boiling Lake, an eerie, geological wonderland hidden deep in the forest.

National Parks Image Gallery The Chisos Mountains are a complex geological wonderland.

The centrally located mountains are a complicated geological wonderland of volcanic plugs, igneous crags, forested buttes, jagged outcrops, wild dry pastures, and bone-dry streams.

Yet it acts like a siren's call on travelers, who find an endless geological wonderland to explore here.

The area promised to be a geological wonderland of hills, mountains, craters, debris fields, and landslides.

Issuing from the 16,000-foot heights of the Tibetan Plateau, the Mekong plunges south through a geological wonderland of dizzying escarpments, hanging valleys and steep gorges for a distance Chinese geographers now calculate at just over 3,000 miles.

It's a geological wonderland where you can chill in geothermal hot springs or set foot on craggy glaciers.

Iceland is where good geography teachers go when they die: a geological wonderland, its unique otherworldly landscapes go some way to explaining why most Icelanders believe in elves and goblins.