Laguna de Alegría, Crater lake in Usulután, El Salvador.
Laguna de Alegría is a crater lake in Usulután with yellow-green water caused by sulfur deposits beneath its surface. The lake sits at about 1,200 meters in elevation and is ringed by steep volcanic walls.
The lake was originally known as Tecapa before receiving its present name from the municipality of Usulután in 1891. This change reflected growing local connections to the place.
The lake's name honors the nearby municipality that became linked to this natural wonder through local tradition. The surrounding area has long been valued for agriculture due to its elevation and climate.
The lake is accessible by a circular road that provides different entry points to the area. Thermal springs and fumaroles are visible in the northwestern section, making that part worth exploring.
Local plant nurseries surrounding the area cultivate tropical flowers that thrive in the region's elevation and cool climate. These gardens form an important part of the local economy.
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