Up to now I have tended to work with SRTM data for small-medium scale topographic mapping (the topographic base I use for all my UK regional maps starts from there). It was always somewhat annoying that the rest-of-the-world dataset was less detailed than that available for the US... which is where ASTER comes in. Version 2 of the dataset has been out for over a year now and I must admit its taken me this long to really get round to looking at it. I like what I see. [But in some lower relief areas - and particularly the UK - it leaves a lot to be desired. Really no better than SRTM - see the useful comments here.]
The above uses ASTER elevation data for topographic mapping with a Landsat overlay to give some realistic colouration. The approach routes of the Roman armies to the Dacian fortress at Sarmizegetusa are taken from Stefan 1998. The grid squares are 5km.
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