If you mean like Dr. Evil's secret underground volcanic 'lair' then it is a hideout, headquarters and home.
No it is known as the underground railroad as it was hidden from sight
1: Underground
The underground railroad happened in the 1830
Procedures for Underground was created in 1970.
The Underground Railroad was started in the 1810. The Underground Railroad was responsible for helping thousands of slaves find freedom.
Aquifer?
The layer underground where there are no empty spaces for water or air is known as the impermeable layer. This layer prevents the movement of fluids such as water or air because it is tightly compacted and does not allow permeation.
its the fequair layer
Impermeable Rock
The underground layer of spongy rock that holds water is called an aquifer. Aquifers store and transmit groundwater, which is an important source of freshwater for drinking, agriculture, and other human activities.
A layer underground that is impermeable and contains no void spaces for water or air is known as an impermeable layer or aquitard. This layer restricts the flow of water or gases through it due to its low permeability.
The rock layer that contains underground water is called an aquifer. Aquifers are important sources of water for drinking and irrigation.
An impermeable layer underground that holds groundwater is called an aquifer. Aquifers are underground layers of rock or sediment that are saturated with water and have limited permeability, preventing water from easily flowing through them.
The layer underground with no empty spaces for water or air is called the impermeable layer. It acts as a barrier preventing the movement of fluids or gases through it. This layer can consist of materials such as clay, shale, or compacted rock.
An underground layer that holds water is called an aquifer. Aquifers are important sources of groundwater, which can be tapped for drinking water and irrigation purposes.
im doing anagrams and the answer is in the words S.A.M.E.
aquifer