Each town can only conquer and hold a number of valleys that is equivalent to the level of its town hall. If a valley is attacked and defeated, by an army from a town holding its maximum number of valleys, the army will not conquer the valley. However, the victorious army will automatically return home to its town with plundered resources that match the type of valley (flats can return any resource).
Clicking abandon relinquish’s control of the valley to the barbarian’s to allow it to be conquered again by whoever you want.
When the server is restarted after daily maintenance, each unoccupied valley will have its level increased by 1, with level 10′s becoming level 1′s.

yay #1. but no comment
Where do i find a valley?