Watch one diver swim the depths of this incredible pool fed by local thermal springs in Italy http://on.natgeo.com/2i0YPmr pic.twitter.com/AmbjuUjtsD

Watch one diver swim the depths of this incredible pool fed by local thermal springs in Italy http://on.natgeo.com/2i0YPmr  http://pic.twitter.com/AmbjuUjtsD

https://twitter.com/NatGeoTravel/status/897216452620685312