ドリーネ

noun

doline; sinkhole

Geological term for a closed depression in karst terrain, formed by dissolution of limestone or other soluble rocks. Used in earth science contexts.

from German Doline

• カルスト地ち形けいにはドリーネがよく見みられる。

  Dolines are often seen in karst landscapes.

• この地ち域いきのドリーネは地ち下か水すいの浸しん食しょくでできた。

  The dolines in this area were formed by groundwater erosion.