Devils Throat Cave

The Devil Throat (Dyavolskoto Garlo) is one of the most remarkable, mystical, and visited abyss caves within the territory of the Rhodope Mountains, situated within the boundaries of the Devin Municipality. The site holds a premier position among the most popular destinations for ecological, speleological, and adventure tourism in Bulgaria. The cave is integrated under the honorary number 88 into the prestigious national register of the 100 National Tourist Sites compiled by the Bulgarian Tourist Union, and it houses the official validation stamp for traveler collection books.

Geographical Location and Accessibility Overview

This natural landmark is situated 1.5 kilometers north of the regional Rhodopean village of Trigrad. It is positioned within the perimeter of the majestic and formidable Trigrad Gorge, which was carved into the heavy limestone cliffs by environmental forces over millions of years. Access to the destination is well-facilitated via a mountain highway cutting directly through the canyon, featuring designated observation and parking zones near the entrance.

The Origin of the Names and Historical Hypotheses

Within local toponymy and popular folklore, several primary theories outline the etymology of the contemporary and ancient names of the cave:

• Origin of the name Devil Throat: The official contemporary title of the cave stems from the unique natural profile of its former historical entrance, which currently operates as the visitor exit, strikingly resembling a giant devilish face.
• The Danger Hypothesis: Another widespread, albeit tragic, folklore theory links the title to the fact that in ancient times, numerous children and livestock lost their lives by falling into the unsecured open abyss.
• The Ancient Name Klokotnik: Across older manuscripts and historical maps, the cave was recorded under the authentic Bulgarian name Klokotnik. It emerged directly from the deafening, roaring, and bubbling sound of the cascading water mass, which remains clearly audible even before crossing the threshold of the subterranean realm.

Chronology of Initial Speleological Surveys

The earliest courageous and documented attempt to explore the interior of this dangerous abyss was executed in 1962 by the mountaineers Radostin Chomakov, Nikola Korchev, and Elena Padareva. The three researchers successfully managed to descend to the floor of the Roaring Hall, subsequently initiating a risky attempt to advance further down by following the turbulent underground river current. Unfortunately, a severe shortage of specialized caving equipment, a lack of prior experience in speleology, and the immense danger thwarted further penetration into the deeper segments of the abyss.

Morphology, Structural Parameters, and the Roaring Hall

The Devil Throat is a classic abyss cave formed during geological history due to a major structural collapse of tectonic strata and extensive karst erosion. Its primary chamber is occupied by a titanic subterranean cavern hosting the tallest underground waterfall across the entirety of the Balkan Peninsula.

Architecture of the Subterranean Network:

• The Roaring Hall (Buchashtata Zala): The cave system was forged by a mountain river plunging underground from an impressive 42-meter height. The waterfall drains into a massive chamber appropriately named the Roaring Hall. Its physical parameters are monumental: the length measures 110 meters, the width amounts to 40 meters, and the vault height reaches up to 35 meters. This stands officially as the largest cave chamber in Bulgaria, surpassed only by the entrance gallery of the Devetaki Cave. To illustrate its scale, the entire patriarchal Alexander Nevsky Cathedral of Sofia could comfortably fit inside it.
• The Tourist Path: To accommodate commercial tourism, an artificial entrance tunnel measuring 150 meters in length was excavated, allowing visitors to smoothly reach the absolute base of the underground river current. From that point, a steep ascent initiates up 301 concrete steps that cross in immediate proximity to the thundering underground waterfall, guiding travelers through the old natural entrance directly back to the surface.
• The River System and the Siphon: At roughly 400 meters from the entry point of the Devil Throat, the waters of the subterranean Trigrad River disappear completely into an exceptionally dangerous siphon gallery. The verified length of this structural siphon exceeds 150 meters, followed by a 60-meter secondary gallery where the underground river exits the cave, returning to daylight through a lower-lying cavern.

Biodiversity Profile and Globally Significant Bat Sanctuary

The territory of the Republic of Bulgaria hosts 33 of the 35 bat species registered across Europe, all of which are strictly protected by the Biodiversity Act across the entire country.

The Devil Throat provides a critical sanctuary for four specialized species of bats that inhabit the underground vaults across different seasons:

• Greater horseshoe bat (Rhinolophus ferrumequinum)
• Lesser horseshoe bat (Rhinolophus hipposideros)
• Long-fingered bat (Myotis capaccinii)
• Schreiber's long-winged bat (Miniopterus schreibersii)

An exceptional scientific fact confirms that the Devil Throat hosts the largest wintering colony of Schreiber's long-winged bats in Bulgaria and the Balkans during their hibernation season. The total population of this wintering cluster exceeds 35 000 individuals belonging to the Schreiber's long-winged and long-fingered bat species, both officially included in the IUCN Red List of Threatened Species. The remaining two species occupying the cave - the greater and lesser horseshoe bats - are listed among priority conservation species for all of Europe. These unique parameters rank the Devil Throat among the most critical and prominent bat sanctuaries across Bulgaria.

Practical Traveler Information

Total Length and Trail: The overall mapped length of the researched cave galleries amounts to 1 kilometer, while the developed path optimized for commercial tourism covers a length of 350 meters.

• Modern Infrastructure: The cave is fully electrified and features modern illumination, with the steep staircases climbing next to the rushing waters of the underground waterfall reinforced by a sturdy concrete handrail to maximize visitor safety.
• Internal Climate: The air temperature within the subterranean chambers remains constant through all seasons, hovering at approximately plus 8 degrees Celsius.

Ancient Thracian Myths and the Legend of Orpheus

The Devil Throat occupies a central position in ancient Balkan mythology, giving rise to numerous legends dating back to the Thracian era. The most famous global myth narrates that it was precisely through the formidable abyss of the Devil Throat that the legendary Thracian musician and poet Orpheus descended into the grim underworld of Hades, determined to rescue and return his deeply loved wife Eurydice back to the land of the living.