Remnant is a Ranger Echo Location in the South West of The Wilds.
It is an old car tunnel section up a hill with a closed off hut in it.
There are 3 Storage Containers as Items of Interest to be found.
How to get to Remnant:
From the main road there is a path you can go up to South East of the Location Marker on the map.
How to get inside the hut:
Follow the cables inside a little room.
Storage Container 1:
Right here is Storage Container 1 and a lever.
Pull the lever...
Once you get out, you will notice that everything is on charge.
Avoid the water.
Weird enough: The metal cars are alright to walk on. So jump onto the cars to get to the pink door to hit the button.
Storage Container 2 and The Fallen Ranger:
Inside the hut are Storage Container 2 and the Ranger.
Storage Container 3:
Jump over and turn off the power again so you can walk inside the water.
At the north side of the flooded tunnel is a car with Storage Container 3 inside.