Lake Proval, Underground karst lake at Mount Mashuk, Pyatigorsk, Russia
The natural lake in a cave formation reaches 11 meters deep and 15 meters in diameter, with mineral water of turquoise color.
Professor A.P. Nelyubin conducted the first detailed chemical analysis of the lake water and measured its dimensions during summer research in 1823.
The entrance features bronze sculptures of lions and a statue of literary character Ostap Bender, who tried selling tickets to the lake.
Visitors can reach the lake through a horizontal tunnel constructed in 1857, with Bus 1 running every 20 minutes from Pyatigorsk railway station.
The water temperature ranges between 26 and 42 degrees Celsius, containing high levels of hydrogen sulfide that creates its characteristic color.
Location: Pyatigorsk
GPS coordinates: 44.04667,43.09861
Latest update: May 27, 2025 07:01
Monument to Mikhail Lermontov
2 km
Lermontov museum-reserve
1.8 km
Lermontov Grotto
1.2 km
Pyatigorsk Cableway
1.1 km
Храм Христа Спасителя
2 km
Operetta Theatre of Stavropol Krai
1.6 km
Central Stadium
3.3 km
Church of Saint Lazarus of the Four Days, Pyatigorsk
1.9 km
Qora lola Pyatigorsk
2 km
Transfiguration Church, Pyatigorsk
2 km
Пятигорский краеведческий музей
1.9 km
Памятник Первым комсомольцам Пятигорска
3 km
Orthodox cathedral in Pyatigorsk
2 km
Diana Grotto, Pyatigorsk
1.8 km
Pyatigorsk Red Cross Colony Ensemble
2.5 km
Building of Pyatigorsk Alexandra and George Nurses Community
2.5 km
Saint Olga Shelter historic hospital
2.6 km
Gate of officers' department of infirmary
1.7 km
Bath building of mud cures institution
3.1 km
Bolnichka
2.5 km
House for poor officers
1.6 km
Building of stable of Pyatigorsk Red Cross Colony
2.4 km
Building of lodge of Pyatigorsk Red Cross Colony
2.6 km
Boiler house of Pytigorsk mud cures institution
3.1 km
Pyatigorsk mud cures institution
3.1 km
Mud cures hospital main building
3.1 km
Sheremetiev barrack
2.5 km
Golitsyn barrack
2.6 kmReviews
Visited this place? Tap the stars to rate it and share your experience / photos with the community! Try now! You can cancel it anytime.
Discover hidden gems everywhere you go!
From secret cafés to breathtaking viewpoints, skip the crowded tourist spots and find places that match your style. Our app makes it easy with voice search, smart filtering, route optimization, and insider tips from travelers worldwide. Download now for the complete mobile experience.
A unique approach to discovering new places❞
— Le Figaro
All the places worth exploring❞
— France Info
A tailor-made excursion in just a few clicks❞
— 20 Minutes