Gully
хатаалтын системийн худаг
дренажный колодец
A deeply eroded channel created by the concentrated flow of water.
Source https://www.lenntech.com/water-glossary.htmGully
угаагдсан судаг
промоина
A deeply eroded channel created by the concentrated flow of water.
Source https://www.lenntech.com/water-glossary.htmЗураг