Namaste!
I try to draw some areas in Nepal usign Bing pictures.
Sometimes I believe, existing natural=* values are not enough for more exactly description in mountains.
Only one example: there are rivers with riverbed filled with small stones.
should we use natural=scree or better introduce for this areas a new description?
Would not landuse = farm be appropriate for terrace farming and maybe we could add something like terrace = yes. Most of these land pockets usually have rice, wheat, maize or paddy. This type of terrace farming is also done in mountain region of China.
If somebody is really crazy mapper, the lines tagged as:
barrier=retaining_wall could be used as well. Don´t forget: in the drawing direction of the line right is down left side is terrain higher.
We have a tag which is now rendered natural=shingle (http://wiki.openstreetmap.org/wiki/Tag:natural%3Dshingle) which should be used for rivers. The rendering is the same as for natural scree, but it is very useful to keep the distinction.
Receding glaciers create a number of natural features which dont have obvious tags (outwash plains, former glacier beds), but prominent lateral moraines can be mapped with natural=moraine or geological=moraine.
For remote mappers any photographs of rural areas which can assist in interpreting aerial images are extremely helpful: villages, farmland for crops, roads, paths, forests. Just a couple of pictures can often really make the difference between guesswork and putting in place a baseline map.