Natural reserve
Ecosystem conservation is crucial for San Sebastián.
Different forest species native to the region have been planted to contribute directly to the rest of the flora and fauna subsystems.
In 2008, the San Sebastián Private Nature Reserve was registered at the National Council of Protected Areas (CONAP for its Spanish acronym), by Executive Order 20-2008.
The San Sebastián reserve is a wildlife corridor of great environmental importance with a variety of migratory species from North American. The reserve is the largest of the Guatemalan Central Volcanic Chain Node due to its extension.