underground tunnel dug into the rock with artificial lighting along the ceiling and gentle curves towards the unknown in tassullo.

infrastructure tunnel formation cave arch wall geology wadi temple subway caving ruins rock alley road soil terrain darkness floor dug linear lighting along ceiling rough walls curved wide passage built transit technical purposes creating mysterious suggestive atmosphere underground artificial gentle curves towards architecture dark excavation environment interior structure mining construction technology safety industrial engineering path mystery quarries light design secrecy cavity rocky natural materials enclosed spaces tassullo italia unknown