An aven in caving is a very steep or vertical section in a cave that needs ladders or ropes to ascend and descend. The Frasin Aven (link in Romanian) is located in the Obcina Mare Mountains, which are part of the Eastern Carpathians mountain range.
The Frasin Aven is the northern-most pin on this map; zoom out for better viewing. Locations of other caves in Romania are also indicated on the map.
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The Frasin Aven can be accessed from Frasin village, on the National Highway #71, between Gura Humorului and Campulung Moldovenesc. The aven was discovered in 1975, it has an elevation change of 73.2 meters, which placed it in the 20th place in the world for elevation change for sandstone caves (based on 1989 statistics).
|Frasin Aven sketch, after Giurgiu and Muraru, 1977|