Here's why:

* High Altitude: Cirrocumulus clouds are found in the high altitude layer of the atmosphere called the cirrus level, typically above 20,000 feet (6,096 meters).

* Small Clouds: They appear as small, white, puffy patches arranged in rows or sheets. These small clouds are sometimes referred to as "mackerel sky" due to their resemblance to fish scales.

* Made up of Smaller Clouds: While not literally made of other clouds, the small, puffy patches of cirrocumulus are made up of ice crystals. These ice crystals are so small and scattered that they appear as distinct, individual clouds, creating the "smaller clouds" effect.

Let me know if you have more questions about clouds!