These maps show where prescribed burns helped curb the Caldor Fire’s rapid growth

The Caldor Fire defied expectations, climbing up mountains and crossing highways, destroying more than 1,000 structures in the process. South Lake Tahoe narrowly avoided the fire’s wrath, which fire experts say was largely thanks to fire prevention activities, including prescribed burns. The following maps show how prescribed burns and other methods of removing vegetation to reduce the risk of hotter, larger fires — known as “fuel treatments” — slowed or curbed Caldor’s growth.