Back in 78 C.E., after careful planning by engineers, a 130 - foot [40 - meter] tunnel, 16 feet [5 m] wide and 16 feet [5 m] high, was dug out of solid rock.
See 40 meetri pikkune, 5 meetri laiune ja 5 meetri kõrgune tunnel raiuti pärast hoolikat planeerimist kaljusse 78. aastal m.a.j.