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Found this collection of links with some archaeological datasets. It's just for UK though.
Here's a teaser
ARCHAEOLOGICAL DATA
Source – BAA, Oxford Archaeology and Wessex Archaeology.
Data – Archaeological data for Stansted and Heathrow Airports. Excavations by Framework Archaeology 1998 to 2004
Format – Various, including ESRI format.
Licence – Creative Commons Attribution-NonCommercial 2.0 License (see website).
Cost – Free.
Comments –
Link - http://www.framearch.co.uk/stansted/index.html - Stansted Link - http://www.framearch.co.uk/t5/data-downloads/ - Heathrow T5
Here are some free archaeological datasets from the Swedish National Data Service.
This one's from the La Milpa, Belize.
