There is no evidence for the statement sometimes made that there was a well or spring below the tholos.
It is the same shaft, diminishing from summit to base, which has been noticed upon the portal front of the tholos of Atreus.
The tholos of Atreus was itself subterranean; the exterior of the conical mass of masonry was covered with a hill of earth.
When Pausanias speaks of the tholos at Epidaurus a second time, he does not call it by that name, but .
An entrance-passage, the dromos, led from the valley to the tholos in a gently inclined ascent.
Below this stratum was an older shaft grave, as is usual in tholos interments; it had been plundered?
The tholos of Polykletos at Epidauros was a circular building 107 feet in diameter, situated within the sacred enclosure.
This building is a dome-covered tomb (tholos) of beehive shape, approached by a long passage (dromos).