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Natural formation · Aquismón, San Luis Potosí
Sótano de las Golondrinas
A natural sinkhole over 500 meters deep, from which thousands of swifts and parakeets emerge in a spiral at dawn.
Illustrative images. The pictures in this guide are illustrations based on the real place, not photographs, and may differ from it.
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About Sótano de las Golondrinas
The Sótano de las Golondrinas is a limestone sinkhole about 15 km from Aquismón, with an opening of roughly 60 meters and a depth of more than 500 meters, one of the largest in the world. It is a protected natural monument.
Thousands of swifts and parakeets nest on the sinkhole walls. At dawn they leave in groups that fly in a spiral to the rim and then disperse into the forest. In the late afternoon they return in a dive into the sinkhole, an equally sought-after spectacle.
From the road, a staircase of about 500 steps descends through the forest to the rim, where there are protected viewing platforms. The local teenek community manages the site and requests silence during the birds' emergence.
The descent to the bottom by rope is carried out only by experienced cavers and with authorization.
Before you go
Practical information
Cidade Turismo reviews its information regularly, but something may have changed. Check with the place before planning your trip.
How much time to set aside
Two hours, including the staircase.
Best time
At dawn to see the birds emerge, or late afternoon to see their return.
How to get there
About 15 km from Aquismón by mountain road, by car or tour, and then on foot via the staircase.
Tip
Arrive before sunrise and remain quiet at the rim during the birds' emergence.
Get your questions answered
Frequently asked questions about Sótano de las Golondrinas
What is the depth of the Sótano de las Golondrinas?
More than 500 meters.
What time do the birds leave the Sótano?
At dawn; they return late in the afternoon.
Can you go down to the bottom of the Sótano?
Only experienced cavers, with ropes and authorization.