Lake Congo (Spanish: Laguna Congo), is a fresh water crater lake located in the northern highlands of Costa Rica.

The three lakes are included in the Bosque Alegre Wildlife Refuge of the Costa Rica National Parks.

[2] It is located in Los Ángeles Sur, of Río Cuarto canton, of Alajuela province.

There is no secondary volcanic activity present.

There is a low possibility of volcanic gas fumes.