Stratus clouds, on the other hand, typically form below 2,000 meters.

Here's a breakdown:

* Cirrus clouds: These are high-altitude clouds composed of ice crystals. They are thin, wispy, and often appear as delicate feathers or streaks in the sky. Cirrus clouds form at altitudes above 6,000 meters (20,000 feet).

* Stratus clouds: These are low-lying clouds that appear as a gray, featureless sheet covering the sky. They form at altitudes below 2,000 meters (6,500 feet).

Therefore, only cirrus clouds form above 6,000 meters.