If the others didn't help I've got DEM2POV v1.2a.
I'll be willing to send it to ya.
I don't remember where I got it and I had to fix the cutting function.
It's a window DOS program.


DEM2POV v1.2a:
Converts USGS Digital Elevation Model data files to tga height-field for
POV raytracer. converted W. D. Kirby, 30 mar 96. hacked from dem2xyz.c
18 apr 95. converts 3 arc second to lat/long, sol katz, mar. 94. added
sampling and cutting to size, sol katz, apr 94. changed the calculation
of start position in sampling code, sol katz, jan 95.

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