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The enormous cavity is dug by water in red, violet and yellow sand stone, making it a unique phenomenon in our country. It is the result of a powerful erosion process with a 600 m diameter and a depth of 100 m. The erosion is still in process and the hole gets bigger and bigger over the years. For example, 80 years ago – on old maps – the place was marked down as a small gap. The edges are sharp, like razors that point to the center of the hole. Situated 9 km from Arieşeni after finishing a 50-minute walk off the road (including 10-15 minutes climb), the hole can be admired in its entire splendor. The road is accessible all year round and is marked on the DN75 road. Be careful of the hole sides because they are not well consolidated.