Hoyo Azul, Natural sinkhole in Higüey, Dominican Republic
Hoyo Azul is a natural limestone sinkhole near Higüey featuring deep blue water pooled at the base of a sheer cliff face. The water surface lies roughly 75 feet below ground level, creating the impression of a hidden underground lake.
The sinkhole formed through the erosion of limestone bedrock over thousands of years, creating an underground pool connected to deeper water systems. This geological process shaped the land that communities eventually discovered and used.
The indigenous Taíno people held these natural water sources as sacred sites for ceremonies and community gatherings before European arrival. This connection to the past remains visible in how visitors approach and treat the place with reverence.
Wear sturdy shoes when visiting, as the paths down to the water can be slippery and steep. Bring swimwear and a towel, since many visitors use the spot for swimming and cooling off.
The water maintains a constant temperature of around 75 degrees Fahrenheit throughout the year, allowing comfortable swimming in any season. This stable warmth occurs because the pool is fed by deep underground springs isolated from outside temperature changes.
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