Tecapa, Stratovolcano in Usulután Department, El Salvador.

Tecapa is a stratovolcano in El Salvador with steep slopes and a prominent summit cone. Its exterior displays layered deposits of hardened lava and volcanic material stacked through numerous past eruptions.

Tecapa is a complex stratovolcano whose current cone formed after a Plinian eruption of pink dacitic pumice that ejected 7.8 km³ of tephra, rated VEI 5.9. The last explosive eruption, around 61,000 BC, sent a column 32 km high and threw out 10.4 km³ of tephra (VEI 6). An older caldera near Berlin, produced by an eruption of the earlier edifice about 100,000 years ago, lies nearby. No later eruptions are documented.

The crater lake inside Tecapa, Laguna de Alegría, was nicknamed "Esmeralda de América" by the Chilean poet Gabriela Mistral. On the volcano's northern slopes rise the fumaroles locals call El Bufadero, Tronador, Tronadorcito, Loma China and El Pinar, part of the daily landscape of Alegría.

The crater lake sits inside the summit crater, reached by a road from Alegría town that was inaugurated on 29 December 1928 by President Pío Romero Bosque. The lake is ringed by hot springs and fumaroles, and the ausoles El Bufadero, Tronador, Tronadorcito, Loma China and El Pinar lie on the northern slopes.

The crater holds Laguna de Alegría, ringed by hot springs and fumaroles; the poet Gabriela Mistral called it the "Emerald of America". On the northern slopes lie the fumaroles known as El Bufadero, Tronador, Tronadorcito, Loma China and El Pinar.