pestera de la nara - old natural cave, spectacular river tunnel at sohodol gorgescheile sohodolului, valcan mountains, in gorj

abrupt beautiful canyon carpathian cave cheile cliff countryside county destination environment erosion formation gallery geology gorge gorges gorj highland karst landscape limestone mountain nari natural nature nobody outdoors park passage pestera region reservation river rock romania romanian scenery scenic sohodol stone stream through tourism touristic travel tunnel vacation water wild wildlife