Another angle. Photos as of mid-March 2015.
Cleaning up litter falls that will simply be washed out by flash flood. Before and after.
Behind the big stones are these organic matter and soil. Photos as of April 04 and May 9, 2015. .
The new top soil were organic matter and eroded topsoil that were trapped by this structure. Imagine the amount of top soil that has been preserved, and flash flood that has been temporarily impounded, for a few hours. How thick or how high is the new soil that has been trapped at the base? Here is one measurement, about 6-8 inches high, or about 3/4 of the shovel base, at around 1.5 meters distance from the big stones.
How it looked before the new topsoil was formed -- hard soil with lots of small stones on the surface.
A small group of blocking stones, as of April 04 and May 9, 2015, respectively.
The big stones were transferred in building the 2nd layer of terraces. Front view of big stones, as of April 04 and May 9, 2015, respectively.
Terraces, Part 10, August 30, 2014
Terraces, Part 11, October 22, 2014
Terraces at Mahogany Area, March 10, 2015
Terraces, Part 13, March 13, 2015