----------------------------Original message---------------------------- I'm conducting archaeological research in the upper Belize River Valley in west central Belize. I'm interested in obtaining digital elevation models and aerial photographs of the area. I'm particularly interested in aerials which could document changes in land use patterns over time. I've heard the Directorate of Overseas Surveys in Tolworth, Surrey, England has a large collection of British aerials. I've also heard they have been merged with the Ordinate Survey in Southhampton as of 1984? I'd appreciate any information the members of the list would have concerning this query. Thanks in advance, Ted Neff P.O. Box #22295 Flagstaff, AZ 86002-2295 [log in to unmask]