BGP, 
Mammoth Cave
The name says it all, Mammoth Cave in Mammoth Cave National Park is the largest known cave system in the world.
Shooting in caves has it's difficulties, mostly lighting a depth.
The lighting is obviously manmade but fairly even across most surfaces.
The interior of the cave is mixes of browns and greys and the passages were easily navigated. See the full image here: https://fineartamerica.com/featured/mammoth-cave-bill-gallagher.html?newartwork=true #MammothCaves #BillGallagherPhotography #BuyIntoArt #AYearForArt #Cave #Kentucky #Nature
