A paved corridor, extended by a staircase leading down three flights of twenty-two steps, leads to the underground fountain, whose supposedly therapeutic character fixes the habitat and cults to the god Glan and the Glanic mothers.
Valetudo (goddess of health) and Hercules “replaced” Glan from the Roman occupation onwards, and the spring made the fortune of the Glanum site.
Initially a simple basin cut into the rock, it was converted into a covered, single-storey building in the 2nd century BC. This trapezoidal basin is watered all year round. A partially rebuilt ashlar arch supports the roof and holds the walls in place.
A catchment gallery drained water from the watershed into this deep reservoir, where rites and devotions were performed by the faithful.
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