This is how grapes are grown on the Canary island of Lanzarote.
There are more than 300 volcanoes on the small island, which is why the earth is mixed with a lot of ash.
Grape seedlings are planted in specially dug pits up to several meters wide.
This is done so that it is easier for the roots to reach the fertile soil layer and to provide the grapes with moisture.
There is practically no rain here, artificial irrigation is also not practiced, the plants are fed by dew, which condenses on the walls of the "funnels".