Another View of the Normans Kill Falls
Just another view of the great, little known Normans Kill Falls in the Gorge under the Thruway Bridge.
Through the Eyes of NASA (Telescope Feed)
Planning a Homestead Using GIS
While this is more of an ArcGIS tutorial it has many ideas you can use with QGIS or your favorite GIS program. Some basics on digital elevation models and using raster math. Might even be better to do programmatically with R!