Price: The deepest cave in Bulgaria. Located in the Troyan Balkan, the eastern portion in reserve " Steneto" . Its depth reaches 380 meters and the total length of the cave its galleries over 3 km, which ranks 13 among the longest caves in Bulgaria .
The whole underworld is located 2 floors with varied nature - a few caverns of various sizes , numerous landslides , underground streams and sinter lakes , a variety of cave formations . The whole cave maze ends with a siphon where the water is lost and still cavers found no where to drain .
Although an impressive depth Raichova hole has only one 8 -foot plummet . And to get to the bottom and have to go down the constant 30 ° slope for 920 meters and you will find yourself in the most beautiful part of the cave.
Cave Rachov hole is formed by the circulation of underground waters for millions of years, formed and beautiful cave galleries and wealth of rock formations in the bowels in.
For the first time cavers from Troyan reach its bottom in 1971 , and in the next 30 years is prospecting today are mapped 3,333 meters of underground and mazes . And the leading place among the leaders of the Bulgarian caves makes it a desired destination for spelunkers and cavers from all over Bulgaria . Although not among the most difficult to Bulgarian caves into her should not come from inexperienced amateurs because many hidden dangers. And because of its location in the reserve part of the National Park , and require special permits for visiting and research purposes .
Today Raychova hole is inhabited by many stenobiontni species of asylum cave dwelling bat species big bat . In order to protect the fauna , which is an important part of the biodiversity in the area of the reserve , conservation organizations are trying to limit the indiscriminate penetration gap and limit the maximum discharge of waste disturbing the ecological balance in the cave.
