The Petrota survey of Palaeolithic and Neolithic stone sources is directed by Nikos Efstratiou (University of Thessaloniki) and Michael Fotiadis (University of Ioannina) in collaboration with the ΙΘ’ Ephorate of Prehistoric and Classical Antiquities (Komotini, Greece).

Funding for the Petrota survey is provided by the Universities of Thessaloniki and Ioannina, with essential in-kind contributions by the ΙΘ’ Ephorate.

The production of this site has been funded by the University of Ioannina.

Field photos, graphs, and texts:

M. Fotiadis.

Stone tool drawings and comments:

Dimitra Papayanni (University of Southampton).

Photo sAV2.6:

N. Efstratiou.

Location map:

courtesy of Google Earth.

Air photo of Vrahos area:

After original orthophotos by the Ministry of Agricultural Development, Greece.

Photo processing for this site:

M. Fotiadis, with help (photos sAV4.14a-b, sAV5.17b, sAV6.20b, sTS1.23) from Yannis Nakas (University of Ioannina)

We owe special thanks to our colleague Diamantis Triantafyllos.