A bit more precise data and calculation. I have used Goggle Earth distance and elevation information. Goggle data errors should not be significant because I am using only the difference of that data for nearby points. Reference points were established according to Picasa composite and other available pictures. We are comparing what Picasa composite has called point 1 and point 7. In point 1, if we assume reasonable height for that fence (1.2 m), then the height of that tree is now 4.2 meters. According to Goggle, terrain elevation at that point is 238m. So, the first tree cutting point is at 238+4=242m elevation. Dirt road in picture 7 is at elevation 250m. If the man in red 1.8m tall, then all trees in that picture were cut at 7.2m height above the level of the road. Which means that trees were cut at 250+7=257m. That means that in, approximately, 295m of horizontal distance we have increase in elevation of 257-242=15m, or 5% climb.
Last edited by PaleBlueDot; 15th Apr 2010 at 05:05.