The zip file in this download is named 'Wudang_HOWM_OP.zip' and contains a map file named 'Wudang_HOWM_OP.map'. After downloading the zip file, unzip the map into the folder: \SIERRA\EmperorRotMK\Cities. That will make it available for selection in Open play, or for viewing in the editor.
This is a modified version of the custom map from the "Hero of Wudang Mountain" custom campaign. It is 'enormous' in size, and has a temperate climate. It is easier to play than the version in the campaign, because it has been modified to provide more options for use in Open Play.
A list of the modifications that are included on it is as follows:
1. A lake with two fishing points was added.
2. Iron deposits were added.
3. Salt marshes were added.
4. Four prey points were added at various locations on the map.
5. The ruins were removed from the map.
6. More pre-placed bridges were added to span the rivers.