Country : El Salvador
Area : El Boquerón
San Salvador volcano (also known as El Boqueron). Picture taken from El Picacho peak with a view to the crater of Boqueron at 1990 meters. El Salvador was my visited country number 101. I’m on my way to number 104 now.
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The San Salvador Volcano (also known as El Boquerón) is a stratovolcano situated northwest to the city of San Salvador. The crater has been nearly filled with a relatively newer edifice, the Boquerón volcano. San Salvador is adjacent to the volcano and the western section of the city actually lies among its slopes. Due to this close proximity, any geological activity of the volcano, whether eruptive or not, has the potential to result in catastrophic destruction and death to the city. Despite this, the volcano is iconic of the city, and several TV and radio antennas are situated on the El Picacho peaks and the crater of Boqueron. El Picacho, the prominent peak is the highest elevation (1,960 meters altitude).
The Boquerón edifice formed between 700 and 1,000 years ago, filling up the G-1 eruption crater. The lavas of the Boquerón edifice contain more alkali element and iron oxide than the lavas of the san salvador edifice, allowing for a clear chemical distinction. Around 800 years ago, the present day crater was formed in a violent explosion. The crater, which gives it the present name (Boquerón means "big mouth" in Spanish) is 1.5 km in diameter and 500m deep. Within the crater around the upper walls, crops are cultivated by the locals who live on the volcano.
The magma chamber which the volcano sits upon contains a number of fissures which protrude along the flanks and sides of the volcano. The northwest (N40W) fissure has been the most active recently, with such significant eruptive events, such as the Loma Caldera eruption which buried the ancient village of Ceren and the eruption of El Playon (1658–71) which buried the town of Nexapa. The citizens relocated to Nejapa and nowadays the eruption is celebrated annually.