Underground farming is usually done using hydroponics, aeroponics or air-dynaponics systems or container gardens.
[2] The advantages of underground farming are that it is independent of the environment above the ground.
Thus, underground farming could be one part of the solution for higher food security.
On the downside are that current high energy costs for the growth lamps.
Mushrooms, particularly Agaricus bisporus, have been cultivated underground in France since the late 1800s.