A little further up the slopes of Gaggera Hill is the spring from which the Sanctuary of the Malophoros gets its water. Fifty metres downstream of it is a building once believed to be a temple (the so-called “Temple M”), which is actually a monumental fountain. It is rectangular in shape (26.8 metres long x 10.85 metres wide x 8 metres high), constructed of squared blocks and contained a cistern, a closed basin protected by a portico with columns and an access staircase of four steps with a large paved area in front of it. The building is in the doric style and is dated to the middle of the sixth century mainly by the architectural terracotta discovered there. The fragments of metopes with the Amazonomachy, although found nearby, do not belong to the building, which had small, smooth metopes.