The Taulas, on the island of Menorca in the Balearics, are one of a number of distinctive types of often enigmatic megalithic structures found on some of the islands of the Central and Western Mediterranean. Along with taulas(a) we have the menhirs of Corsica(b), the nuraghi of Sardinia(c) and the temples of Malta(d). It has been claimed(e) that the Maltese temples were built by ancient Sicilians, a claim which raises an obvious question as to why, if that was the case, no comparable temples were built on Sicily, which does have its own collection of dolmens(f).
Peter Hochsieder & Doris Knösel have published an extensive study of the thirty-one taulas remaining, including an investigation of their possible archaeoastronomical significance.*A recent study(g) of Neolithic tombs in Monte Revincu, appears to confirm that these monuments had an astronomical orientation, supporting the opinions of Michael Hoskin as well as those of Hochsieder & Knösel(h).*
Taulas (which means ‘table’ in Catalan) are frequently found near talayots, which are earlier tower-like structures of which there are at least 274 on Majorca and Menorca.
I have commented elsewhere that the shape of the taulas is remarkably like that of the monuments found at Göbekli Tepe!
*(b) http://www.roughguides.com/destinations/europe/france/corsica/sart%C3%A8ne-sart%C3%A8-around/megalithic-sites/ (link broken Jan. 2019) See: https://web.archive.org/web/20160918230516/http://www.roughguides.com/destinations/europe/france/corsica/sartène-sartè-around/megalithic-sites/*