Kolkina Dupka is the longest cave in Bulgaria with 19,164 meters of underground galleries. Until now, Duhlata in Vitosha mountain with 18,200 meters of galleries was considered the longest in the country. This is what speleologists of the "Pod Raba" caving club, which is exploring the cave, told BTA.
According to them, in addition to being the deepest and longest in Bulgaria, Kolkina Dupka is definitely also the most difficult cave to explore with many underwater rivers. Entering the cave requires special equipment and preparation.
In 2017, Kolkina Dupka, in the municipality of Svoge, became known as the deepest cave in the country with a depth of 543 m. But according to researchers, the cave has not been fully explored and there might be a new correction in the data.
The ruling parties GERB-SDS, BSP-United Left and ITN signed an annex to their coalition agreement, specifying the rules for the rotation of the Speaker of Parliament. The new mechanism provides for each of the three political formations to nominate its..
More and more Bulgarians fear about the future security of their finances . This is shown by a survey by the sociological agency "Measure", conducted between October 5 and 13, 2025 among 801 adult Bulgarian citizens. Almost 60% of workers in..
The necessary net monthly income for subsistence for a worker living alone in September 2025 is 1,547 leva (748 euros) . For a three-member family with a child under 14, 2,785 leva (1,346 euros) are needed. This was announced by Violeta Ivanova, deputy..
An earthquake with a 6.1 magnitude on the Richter scale hit Western Turkey at 22.48 hours last night. There were over 40 aftershocks after the..
Bulgaria’s draft social security budget indicates that the minimum wage from 1 January 2026 will be lower than the level set out in the Labour Code ,..
On Tuesday , the lowest temperatures will be between 3 and 8°C; in Sofia – about 4°C. During the day before noon cloudiness will be..
Partly Cloudy