Witch's Hollow is a PvP instance where your objective is to capture and defend the various points on the map. The first side to reach the maximum points or over wins (2500).
There are three points on the map: Windmill in the West, Sawmill in the South, and Zem in the North-East. Each captured point will increase the amount of points you get per tick. A neutral or contested point will not count toward either side for a tick. There's an additional power-up area in the center of the map that will either continuously heal you or give you double damage for 90s.
Capturing a point sets a timer of 30s onto it as a contested state. During that time, the opposing team can come in and re-capture the flag, either putting it as contested for themselves for a neutral point or returning it as their own if it was previously their point.