st. patrick`s well, orvieto, italy. historic well. great enginee

1547 abyss ancient arch archeology arches architecture are art below bottom built characteristics circle dark deep depth enginee engineering enterprise etruscan fall from glimmer great helical high historic historical history hole inside italy light lit look magic masterpiece meters monumental mysterious mystery mystic orvieto out patrician patricks patrizio perspective ramps san scale spiral staircase stairs subterranean tourism travel tuff umbria underground water well width windows work