doline
doline — noun
1. a bowl-shaped hole in the ground that appears when the surface layer of earth co
a bowl-shaped hole in the ground that appears when the surface layer of earth collapses into an empty space below, commonly found in limestone regions where groundwater has gradually dissolved the rock
Three days of heavy rain opened a wide doline in the Okonkwo family's cornfield.
doline + verb 'opened up' + location with 'in'
The hiking guide warned the group about a deep doline hidden near the Karst trail.
Eri drew a diagram showing how a doline forms when an underground cave roof collapses.
Engineers filled the doline with gravel and rock to make the construction site safe.
A massive doline near the highway swallowed two cars before emergency crews closed the road.
- sinkhole
the common everyday word for this landform; used in news, conversation, and general writing about ground collapse
- swallow hole
a British geography term for a doline where surface water drains into an underground channel
- cenote
a water-filled doline, typically in the limestone regions of Mexico and Central America
用法筆記
Doline is a technical geological term used mainly in academic writing, environmental surveys, and descriptions of karst landscapes. In everyday speech and news reports, 'sinkhole' is the standard word.