Carl Herold has a data base in excel format of Landing spots in the
Great Basin.

mg
Eric Greenwell wrote:
I'm flying at the Auxiliary-powered Sailplane Association Parowan camp
in July. While I have a current FAA database of all charted airports for
use in SeeYou and SeeYou Mobile, I don't have a database of the
(hopefully numerous) uncharted landing areas, such as dry lakes, roads,
ranch and duster strips, and so on. What I'd like is a database of
landing areas suitable for an 18 meter glider, or at least the
runway/landing area width in the comments/description section, but even
a database without this information is useful, because I always check
out a potential landing area before I count on it.

I can use any format SeeYou can use, such as dat (Cambridge) or cup
(SeeYou).