The White Mountains, or Lefka Ori, is the largest massif on the island and its highest summit is Pahnes (2.453 m). The heart of this imposing range includes the Mountain Desert, where more than fifty peaks named Sori (piles), reminding of cones, exceed the altitude of 2.000 m. Dolines, reminding of upturned cones are formed at the foot of Sori peaks. This creepy and haunting landscape is a unique geological formation in the entire northern hemisphere.
Hiking in the White Mountains requires fitness, experience and a good sense of orientation. There are several mountain shelters where mountaineers can spend their night.

The highest mountain areas are covered by snow till late June. There are numerous caves, precipices, sinkholes and canyons. The most famous gorge is Samaria in the White Mountains National Reserve, but there are many more: to the south, the gorges of Aradena, Tripiti, Klados, Agia Irini, Imbros and Kallikratis, and to the north, the gorge of Vrissi, Therisso, Cyclamen, Boriano, Dittany, Kidoni and more.

The White Mountains are home to the deepest caves in Greece. These include the dark sinkholes of Gourgouthakas and Leon. The most well-known plateaus include Omalos, Anopolis, Askyfou, Tavri and Niato.

The White Mountains host a great variety of flora and fauna species, which are exclusively endemic (stenoendemic), not to be found anywhere else –not even in other parts of Crete. The areas on the southern side of the mountain range are covered with cypress, oak and pine trees, whereas humid areas favour the development of chestnuts, planes and other aquatic plants.