UFO로 착각할수 있는 신비스런 렌즈구름(Lenticular clouds)

Lenticular clouds over volcanic massif Tolbachik on the Kamchatka Peninsula in the Russian Far East.

Similar to the spiral lenticular cloud over the stratovolcano Mount Shasta in California, USA.

Lenticular cloud above Mount Fuji in Japan.

Lenticular cloud and aircraft condensation trails of Gevgelija in Macedonia.

Lenticular cloud hanging over the mountainous terrain.

Lenticular clouds over the mountains stratovolcano Drum Wrangell Alaska in the United States.

Lenticular clouds are layered over the top of Mount Fuji in Japan.

Lenticular clouds are hanging over the lagoon Miskanti near the village of San Pedro de Atacama in Chile.

Layered on top of each other lenticular cloud - a truly unusual sight in the sky Denver, Colorado, USA.

Lenticular cloud perched on the top of Mount Rainier in Washington State in the United States.

Lenticular cloud over the volcano in the Virunga Mountains in Rwanda.

Lenticular cloud at sunset over Mount Denali in the eponymous national park in Alaska in the United States.

Photographer Akihiro Shibata was lucky enough to witness how these related to the arch clouds shrouded the top of Mount Fuji 

- Japan's highest mountain.

Lenticular clouds over the astronomical observatory on the island of Palma, which is part of the Canary archipelago in Spain.

Lenticular cloud in the sky over the expanses of Arizona in the United States.