Coatepeque Caldera

{{Short description|Caldera in El Salvador}}

{{redirect|Teopan|the archaeological site in Guerrero|Teopantecuanitlan}}

{{Infobox mountain

| name = Coatepeque Caldera

| photo = LakeCoatepequeElSalvador (cropped).jpg

| photo_alt = Satellite view of the Coatepeque Caldera

| photo_caption = Satellite view of the Coatepeque Caldera

| map = El Salvador

| elevation_m = 746

| elevation_ref = {{cite web |title=Global Volcanism Program {{!}} Coatepeque Caldera |url=https://volcano.si.edu/volcano.cfm?vn=343041 |website=Smithsonian Institution {{!}} Global Volcanism Program |access-date=13 April 2023 |language=en}}

| coordinates = {{coord|13.87|N|89.55|W|type:mountain_region:SV|display=title,inline}}

| coordinates_ref =

| length_km = 7

| width_km = 10

| native_name = {{native name|ppl|Cōātepēc}}

| native_name_lang = ppl

| translation = "at the snake hill"

| country = El Salvador

| state_type = Department

| state = Santa Ana

| region_type = Municipality

| region = Coatepeque

| formed_by = Volcanic eruption

| type = Caldera, stratovolcanoes

| geology = Rhyolite, Dacite, Andesite/Basaltic andesite

| volcanic_arc = Central America Volcanic Arc

| last_eruption = 72,000 and 57,000 years ago

| module = {{Infobox body of water | embed = yes

| name = Lake Coatepeque

| native_name = {{native name|es|Lago de Coatepeque}}

| image = Coatepeque Lake.JPG

| location = Coatepeque, Santa Ana

| coordinates = {{coord|13.864702|-89.546800|region:ZZ_type:waterbody|display=inline}}

| type = Caldera lake

| basin_countries = El Salvador

| length = {{convert|7|km|abbr=on}}

| width = {{convert|10|km|abbr=on}}

| area = {{convert|10|mi2|abbr=on}}

| depth = {{convert|115|ft|abbr=on}}

| max-depth = {{convert|115|m|abbr=on}}

| elevation = {{convert|745|m|abbr=on}}

| islands = Isla Teopán

| reference = {{cite web |title=Coatepeque Caldera - Location/Geological Setting |url=http://www.geo.mtu.edu/volcanoes/central_america/el_salvador/coatepeque/location.html |website=www.geo.mtu.edu |access-date=13 April 2023}}

}}

}}

Coatepeque Caldera (Nawat: {{lang|ppl|cōātepēc}}, "at the snake hill") is a volcanic caldera in El Salvador in Central America. The caldera was formed during a series of rhyolitic explosive eruptions from a group of stratovolcanoes between about 72,000 and 57,000 years ago. Since then, basaltic cinder cones and lava flows formed near the west edge of the caldera, and six rhyodacitic lava domes have formed. The youngest dome, Cerro Pacho, formed after 8000 BC.