Dobra (Kupa)

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The Dobra is a river in central Croatia. It rises near the village of Gornja Dobra in the area of ​​Gorski Kotar. Directly at the entrance to Ogulin the Dobra disappears in about a 16 -meter-high cave entrance ( Ponor ), then flows through the Medvedica cave system, occurs after 16 kilometers as karst spring back to the surface and flows after a total of 124 kilometers near Karlovac in the Kupa.

The Dobra flows mostly through a karst area. A very significant karst in Croatia are not far away Plitvice Lakes. At high tide, or when it comes into the underground waterways to clogging, the water may build up to the top of the cave entrance Ogulin. Typical of the Dobra and for other karst rivers is its clear, emerald green shimmering water. In summer, the maximum temperature of Dobra in some places is more than 24 ° C.