ojakaivoa
Ojakaivoa is a Finnish term that translates to "drain well" or "drainage well." It refers to a specific type of well or pit constructed in agricultural land or areas prone to waterlogging. The primary purpose of an ojakaivoa is to collect excess surface and groundwater that accumulates in ditches, furrows, or low-lying fields.
These wells are typically dug and lined with permeable materials such as stones, gravel, or perforated pipes.