Spruce Lake Ambush Camp sits on a NERO checkpoint at the mouth of a barricaded tunnel in Crater Lake. A small Horde inside the tunnel wakes at any noise, but it also makes this a good place to farm ears.
Stay quiet. A loud fight here pulls the tunnel Horde out on top of the camp's defenders. Use the crossbow and stealth kills, or pull back if the Horde stirs.
Once the camp is clear, the tunnel Horde becomes a practice range. Wake it, let it climb the barricade and set off the explosives around the camp. It respawns later, so you can repeat it.
Killing everyone isn't enough: find the bunker hatch and read the map inside to clear the camp. The bunker then works as a fast travel point and a bed to sleep in. The checkpoint on the same site is a separate job worth doing on the same trip.
Cascade Lakes Railway Ambush Camp
Cascade Lakes Railway Ambush Camp is a Crater Lake camp on the rail line east of Diamond Lake. It pays 4,000 XP and Wizard Island Trust, and its loot is heavy on crafting parts.
Ambush Camp
Ambush Camps are hostile survivor camps you clear for the Ambush Camp Hunter storyline. There are 14 across the map, each paying XP, Trust and credits to a nearby camp, and each bunker becomes a fast travel point.
Aspen Butte Ambush Camp
Aspen Butte Ambush Camp is a Highway 97 camp northwest of the Chemult Community College NERO Checkpoint. It pays 5,000 XP, the joint best of any ambush camp, and clearing it stops the traps on the roads around it.
Bare Bay Ambush Camp
Bare Bay Ambush Camp sits in the far south of Highway 97, south of the Chemult College NERO Checkpoint. Like Aspen Butte it pays 5,000 XP and 2,750 Diamond Lake Trust, so it is worth the long ride.