>>2393154It's not flat though. It literally tilts down from the point of the camera, which is why this lower level pools some water, which is why it's a good candidate for rice.
Behind the camera is an elevated area, where buckwheat is planted in more dry and well draining conditions and it's bumpy as well due to moles and ant hills naturally terraforming and making bumps.
oh well, I just scalpel those mounts like an indian does to a white man and plant right into them as the ground is quite soft and porous