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.
Scout from cover with Survival Vision, then take quiet kills with the crossbow or a suppressed gun. If it goes loud, fall back to a doorway and let them come to you. Camps like this string wire traps across nearby roads to knock riders off their bikes, so come in slowly.
This is one of the better loot camps, with enough parts for several Molotovs and bombs. 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.
Tumblebug River Infestation to the south and the Volcanic Legacy checkpoint to the southeast both pay Wizard Island too.
Spruce Lake Ambush Camp
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.
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.