Metolius Lava Cave Horde is a 150-Swarmer Horde in Lost Lake, one of the Horde Killer targets. It opens after Flow Like Buried Rivers. Clear it for 3,000 XP and 600 Trust at Iron Mike's Camp.
This many Swarmers will flatten you in the open, so plan a route before you shoot. Bring Molotovs or napalm, pipe bombs, proximity mines and a high-capacity gun like an LMG. Lay mines along your retreat line and keep backing up while you fire.
Hordes bed down somewhere dark during the day and move out at night to feed and drink. Scout the area in daylight while it sleeps, then pick when to start the fight. If you only need to pass through, give its route a wide berth after dark.
You can ride off, restock and come back. The kill count holds for a while, but stray Swarmers top the Horde back up if you wait too long. Keep your bike fuelled and parked on your exit route, not in the Horde's path.
This is the Horde Deacon and Iron Mike followed up to the Metolius cave. The plan to seal the cave with TNT never happened, because the TNT went somewhere else.
Iron Mike's Camp
Iron Mike's Camp, also called the Lost Lake Settlement, is the encampment at the old Lost Lake resort. It becomes your home base mid-story, and its mechanic sells some of the best bike parts in the game.
Berley Lake Horde
The Berley Lake Horde is a 75-Swarmer Horde Killer target in Lost Lake that uses the lake as a watering hole. It opens after We've All Done Things and pays 3,000 XP plus Iron Mike's Trust.
Image: Bend Studio / PlayStationOld Sawmill Horde
The Old Sawmill Horde in Lost Lake is the biggest Horde in Days Gone, at 500 Swarmers. You have to clear it in I'll Save Some For You so the creosote truck can be filled. Stock up on fire and explosives before you ride in.
River Flow Farms Horde
River Flow Farms Horde is a 75-Swarmer Horde in Lost Lake, one of the Horde Killer targets. It opens after Not Like I Got A Choice. Clear it for 3,000 XP and 600 Trust at Iron Mike's Camp.