Cave of Swallows — Local services in San Luis Potosí

◉ The Cave of the Swallows, is an open-air cave in the municipality of Aquismón, San Luis Potosí, Mexico. The elliptical mouth, in a karst slope, is 49 by 62 m (154 by 200 ft) wide and is undercut around its entire perimeter, widening into a room approximately 303 by 135 metres (994 by 442 ft) wide. The cave floor is a free fall of 333 metres (1,092 ft) from the lower side of the opening, with a drop of 370 metres (1,214 ft) from the higher side, making it the largest known cave shaft in the world, the second deepest shaft in Mexico, and perhaps the 11th deepest fall in the world. Lists of deepest caves use different criteria, not pure drop, but accessibility. The floor and walls of the cave are inhabited by millipedes, scorpions, insects, snakes and birds. From the floor at the bottom of the main shaft there is a series of narrow shafts known as "The Crevice", totaling about 140 m (460 ft), which brings the total depth of the cave to 515...

The best experience of my life! You can't miss it. We stayed about 5 mins from the entrance, consider 30 mins to get to the parking area, then you cross the entrance by foot and go down about 500 stairs, make you sure you are there before 7 am, which is the time the swallows started to leave the cave. We saw about 1 millions beautiful swallows, fly in circles! And also if you stay quite you will see small green parrots flying around, they all flew above us. This lasts about 1 hour. Make sure you ask about the scheduling before you go, as swallows leave at different times, depending on the weather. You can also see them in the afternoon, about 4pm. Its a long way down, but...

◉ The Cave of the Swallows, is an open-air cave in the municipality of Aquismón, San Luis Potosí, Mexico. The elliptical mouth, in a karst slope, is 49 by 62 m (154 by 200 ft) wide and is undercut around its entire perimeter, widening into a room approximately 303 by 135 metres (994 by 442 ft) wide. The cave floor is a free fall of 333 metres (1,092 ft) from the lower side of the opening, with a drop of 370 metres (1,214 ft) from the higher side, making it the largest known cave shaft in the world, the second deepest shaft in Mexico, and perhaps the 11th deepest fall in the world. Lists of deepest caves use different criteria, not pure drop, but accessibility. The floor and walls of the cave are inhabited by millipedes, scorpions, insects, snakes and birds. From the floor at the bottom of the main shaft there is a series of narrow shafts known as "The Crevice", totaling about 140 m (460 ft), which brings the total depth of the cave to 515 m (1,690 ft). ◉ كهف السنونو، هو كهف في الهواء الطلق يقع في بلدية أكويسمون، سان لويس بوتوسي، المكسيك. يبلغ عرض الفم البيضاوي، في منحدر كارست، 49 × 62 مترًا (154 × 200 قدمًا) ويتم تقويضه حول محيطه بالكامل، ويتسع إلى غرفة يبلغ عرضها حوالي 303 × 135 مترًا (994 × 442 قدمًا). أرضية الكهف عبارة عن سقوط حر يبلغ 333 مترًا (1092 قدمًا) من الجانب السفلي للفتحة، مع انخفاض قدره 370 مترًا (1214 قدمًا) من الجانب الأعلى، مما يجعله أكبر عمود كهف معروف في العالم، والثاني أعمق عمود في المكسيك، وربما يكون الحادي عشر من أعمق سقوط في العالم. تستخدم قوائم أعمق الكهوف معايير مختلفة، ليس قطرة محض، ولكن إمكانية الوصول. وتسكن أرضية وجدران الكهف الديدان الألفية والعقارب والحشرات والثعابين والطيور. من الأرضية أسفل العمود الرئيسي توجد سلسلة من الأعمدة الضيقة المعروفة باسم "الشق"، ويبلغ إجمالي طولها حوالي 140 مترًا (460 قدمًا)، مما يجعل إجمالي عمق الكهف 515 مترًا...