Cool clouds to match the Hoodoos.

Hoodoos are pillars of rock, typically between 5 and 150 feet high. Unlike a spire (which tapers from bottom to top), hoodoos have a variable, totem pole-like thickness throughout their height. The towers are typically a softer sandstone capped by a more erosion-resistant layer of rock. As the softer rock of the pillar erodes away at a faster rate than the hoodoo cap, seemingly-impossible shapes form.