doline
/dɒˈliːn
/(also dolina /dɒˈliːnə/)
noun Geology
A hollow or basin in a karstic region, typically funnel-shaped.Such openings are spaced some distance apart in most limestones and these are the features that may become selectively enlarged into characteristic karstic landforms such as dolines, caves, swallow-holes, and gorges....
- The entrance was a spectacular doline 150m across and 100m deep where a devious route down lunged from tree to tree with only the occasional bamboo ladder or dodgy hand line for assistance.
- Just to make sure there was not a way on at the other end of the last entrance doline, they thrashed through the leech infested jungle, but found nothing.
Origin
Late 19th century: via German from Slovene dolina 'valley'.