I’ve been actively mapping on OSM this summer vacation to complete the map of my hometown. After my effort of 20 changesets in which 2284 ways and 8989 points were contributed, there’s just 5 blocks left blank in the town of Mengjin. I intend to finish them before the new semester starting on 7th. It’s a pity that the export service is always too busy to be available and the new tiles have not been rendered to the map, so I cannot post the map picture here. :-( Here comes my question. It’s about a natural feature which is very common in my area and northwest China. Having read the cliff article in wiki, I don’t think it’s proper to tag the feature as cliff because the same doubt was put forward in the discussion whether a cliff of around 1-3 meters deep as well as not made of rock but earth can be called a cliff. As far as I know, gully is the depression with nearly vertical scarp as a result of water erosion, which quite suits my situation. Luckily I found the gully article in wiki and used it in my work. The place where I used natural=gully. However this tag in not commonly used by others and not rendered as well. I wonder if what I did was appropriate and need help. And same problem for the agricultural terrace. How do I map that cliff of low depth?