Bag of the Demiplane

This is a normal Bag of Holding, however it has had Demiplane cast on the entrance, instead of going into the inside of the bag of holding, you enter a Demiplane, the Demiplane is a bland world that seems to last infinitely, however it is detailed randomly with gargantuan versions of random items and patches of the land made of the Bag of Holdings material. 
The landscape of the Demiplane is a permanent sunset, just enough not to see the sun, the floor is normal plains but when you hit it it appears to be made of metal.

Notes: Utility