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Alan Magnus-Bennett refers to having folded OS 1:25,000 Explorers and thus being able to get rid of flat Pathfinder predecessors and save space. In terms of cubic space folded maps tend to occupy rather more space than flat counterparts: first, there is the cover, invariably on much heavier-weight card (and often projecting beyond the folded map) and second all systems of foldinmg involve 'air pockets', particularly the 'Bender' fold used by the OS. If there is an option, having folded maps only seems worthwhile if they are likely to be heavily used, can easily be replaced, and can be stored somewhere where there isn't a conveient space for a cabinet suitable for flat maps. Mind you, storing maps rolled is even more inefficient!! R.O. ------------------- Richard Oliver, B.A., D.Phil., F.B.Cart.S., School of Geography & Archaeology University of Exeter Exeter, EX4 4RJ [log in to unmask]