|The Tree Witch|
Lenticular clouds come in several flavors. They form in the troposphere, the lowest portion of the Earth's atmosphere which, by the way, contains 80% of the atmosphere's mass.
|"Virunga National Park Landscape" by Cai|
Lenticular clouds sometimes get mistaken for UFOs or "UFO cover." Being something of a lowlander myself, I saw my first lenticular cloud well into my adult years. They do not form close to the ground.