@ddtpecko 25 April 2022 more from that month

My dear friends of the noise! Today is a gloomy day, but they are announcing a later clearing and a sunny day. In fact now I look up and see the sun shining. I looked through some photos and came across these with Drago's abyss located near Donja Leskovica near Valjevo. Here is what is written on the board near the entrance to Drago's abyss: Dragov Ponor Cave is located on the surface above the Sušica canyon, at 646 m above sea level. Drago's abyss represents the deepest pit of the Valjevo karst. The depth of the pit is 183 m, and with the lake at the bottom the total depth is 200 m (so that the bottom of the pit is at an altitude of 446 m) The formation of the Dragoon abyss is related to the erosion of dripping waters, while the lower parts were formed by the erosion of the underground flow. There are no constant water flows in the pit, but they occur periodically. The entrance to the pit begins with a sloping canal that continues vertically to a terrace covered with limestone and clay. From this terrace there is an entrance channel, rich in cave jewelry and a descending channel that leads to the siphon lake through several cascades. By coloring the water of the siphon lake, an underground connection with the source of Paklja and the source of the river Gradac was established. Note: Speleological equipment is required to pass through the pit! *********************************************************************************************** Dragi moji prijatelji buke! Danas je osvanuo tmuran dan ali najavljuju kasnije razvedravanje i sunčan dan. Ustvari sada sam pogledao i vidim sija sunce. Pregledao sam neke fotke i naidjoh na ove sa Dragovim ponorom koja se nalazi u blizini Donje Leskovice u blizini Valjeva. Evo šta piše na tabli kraj ulaza u Dragov ponor: Jama Dragov ponor nalazi se na površini iznad kanjona Sušice, na 646 m nadmorske visine. Dragov ponor predstavlja najdublju jamu Valjevskog krasa. Dubina jame je 183 m, a sa jezerom na dnu ukupna dubina iznosi 200 m (tako da se dno jame nalazi na nadmorskoj visini od 446 m) Nastanak Dragovog ponora vezan je za eroziju prokapnih voda, dok su niži delovi nastali erozijom podzemnog toka. Ne postoje stalni vodeni tokovi u jami, ali se javljaju periodični. Ulaz u jamu počinje iskošenim kanalom koji se nastavlja vertikalnim do terase prekrivene krečnjakom i glinom. Od ove terase se odvajaju ulazni kanal, bogat pećinskim nakitom i silazni kanal koji preko nekoliko kaskada vodi do sifonskog jezera. Bojenjem vode sifonskog jezera utvrdjena je podzemna veza sa vrelom Paklje i vrelom reke Gradac. Napomena: Za prolazak kroz jamu neophodna je speleološka oprema!