The Galapagos sit over a "hot spot" on the earth's crust and have many active volcanos. Here are models of the islands and six volcanos. A very nice introduction to Galapagos geology, which includes descriptions of the individual volcanos, is avaiable at:

http://www.geo.cornell.edu/geology/Galapagos.html

The models were constructed from NASA's SRTM3 data:
http://dds.cr.usgs.gov/srtm/version2_1/
using a program similar to that described in thing:121275.

Stl files are:

Galapagos.stl 320 x 280 thirty arc-second intervals
Wolf.stl 200 x 180 three arc-second intervals
Darwin.stl 230 x 230 three arc-second intervals
Alcedo.stl 200 x 220 three arc-second intervals
Sierra_Negra.stl 200 x 200 three arc-second intervals
Cerro_Azul.stl 200 x 200 three arc-second intervals
Fernandina.stl 200 x 200 three arc-second intervals

The fortran code that created the polyhedron commands is included.

The models can be printed directly on the build platform.

Missing SRTM3 data points have the value -32768 and appears as holes in the volcano models. The positions of the holes suggests that the satellite recording the data passed to the east of the Galapagos.

Scaling is simplified as the Galapagos sit on the equator. A millimeter on the volcano models equals 230 meters - ( 1 inch is 3.29 miles). The vertical scale is a mm for every 167 meters.