• The lake was called Proval (breakdown) by Academician Johann Güldenstädt, who first described it in 1773.
  • According to the local scientists the Proval is an extinct crater which is located on the southern slope of Mashuk, on the outskirts of Pyatigorsk.
  • Proval is a mysterious underground lake, which can be seen after a walk through a long tunnel.
  • Proval Lake became a real sight in 1858 when a horizontal tunnel had been driven leading to a big apron in front of it.
  • Things to do near Proval Best places in Pyatigorsk.
  • Pyatigorsk, Russia - September 30, 2020: Proval Lake entrance at Mountain Mashuk in Pyatigorsk, a spa city in Caucasian Mineral Waters region...
  • "Proval" is a natural cave on the mountainside Mashuk, natural monument, is a conical funnel 15 inches in diameter and a height of 41 meters, and at the bottom...
  • Mosaic icon near the lake Proval Мозаичная икона у озера Провал.jpg 5,472 × 3,648; 17.48 MB.
  • beautiful natural underground karst mineral lake Proval with pure blue water of Mashuk mountain in Pyatigorsk, Northern stock images.
  • Proval lake (Русский: Озеро Провал) bir turistik, içinde Göller biridir Pyatigorsk , Rusya .