One of the three Bulgarian speleologists trapped in the world's deepest cave Krubera has managed to climb out of it, Bulgaria's Speleology Federation reported.

Thursday morning Svetlomir Stanchev climbed out to the ground and is now in the expedition's base camp. The climbing took him two days but he is in good health, the Federation explained.

The snow cover in the region is nearly half a meter deep, but it is expected to melt and increase the water level in the cave.

The fourth Bulgarian in the expedition Orlin Kolov is at a depth of 580m, but the location of the other two Bulgarians - Teodor Kisimov, Konstantin Stoilov is unknown.

Earlier on Thursday it was reported that the Bulgarian speleologists who have been trapped in Krubera in Georgia are expected to climb out by October 26.

The joint Bulgarian-Ukrainian expedition was expected to last until October 28, but will most likely be ended earlier due to the bad weather in the region, the Bulgarian Federation of Speleology announced on its website.

Teodor Kisimov, Konstantin Stoilov and Svetlomir Stanchev reached a depth of 2,080 meters earlier, going in deeper than any Bulgarian has ever been.

Continuing torrential rains had flooded some tunnels, leaving the Bulgarians trapped in their bases inside the cave.

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