What's here
It is significant that Kent asks "What's here" in the quarto edition compared to "Who's there" in the folio. The "who" indicates that Kent is inquiring about the identity and whereabouts of a person, while the "what" indicates that the unknown presence in the scene could be more ambiguous--such as a natural force or something that potentially has an inhuman quality. A human stripped down to its base nature, like Lear or Poor Tom in the scenes containing their madness and nakedness, could also be considered a "what." Therefore, I think it is powerful that, in the quarto, Kent presents this possibility of a stage presence with an ambiguous quality existing in the scene, because it fits in with Shakespeare's thematic use of chaos and perverted human nature in the play.
Sacred Valley in Peru.
The top image is the Templo Mayor ruins in Mexico City. The bottom image is a drawing of what Templo Mayor looked like. I thought these were interesting.