marmite

[ladorada]

I searched for this word in English and I couldn't find if it means also a kind of circular or oval hole formed by erozion in the bed of a river. If it helps, the French word is "marmite". I don't know if I can use the same term or if there is another English word for this.

[Lizly]

I'm not sure if it's the same thing you're looking for, but there is something called a "doline" which develops into a sinkhole.

They have the same cauldron shape as a french "marmite".

Hope it helps!

[heathfield]

'Dolines' are sink-holes formed by water dissolving the rock. The holes in riverbeds caused by the scouring action of stones and pebbles are usually just called 'potholes'.

[ladorada]

I think the difference made by heathfield is what I mean. "pothole" is closer to what I am looking for if they are holes in riverbeds. if a "doline" is not necessary formed in the riverbed, then this might be something different. thank you for your help.