The panorama gives an impression of the hill (although the weather messed the scene up a bit). There is also a link to a panorama from a Swedish dolmen.
odysseus
The similarity with Tholos tombs in Mycenae struck me: Round chamber with recesses (although Atreus Treasury has only one).
News and discussion about the book Atlantis from a Geographer's Perspective: Mapping the Fairy Land, by Ulf Erlingsson. A short video presents some of the intriguing details from the book.
The author considers that Plato's Atlantis was a utopia, but shows that with a probability of over 99.98%, Plato based the description of Atlantis' geography on Ireland.
Contrary to press reports in August, the National Museum of Ireland did not rule out that Ireland could have been Atlantis (Full text). The previous reports were apparently the result of quoting out of context.
There is a new website for the theory now, AtlantisInIreland.com, which includes a blog and an invitation to a real time debate.