Shipwreck Beach - Beach Below the Survivors' Camp

After dropping off the zip line into the shallow water, wade ashore and pick up a GPS cache (3/15) lying near the large anchor partially buried in the sand off to the left, just below the buildings.

There's a food cache on top of the cargo container stranded in the shallow water nearby. Getting it takes a little effort, which may or may not be worthwhile to you for the 20 XP you receive.

If you want it, start by shooting the pulley that tethers the small, wooden boat to the pier. This frees the boat.

Wade into the shallow water and use rope arrows to gradually maneuver the boat between the rocks and over to the container.

You can then climb onto the boat and jump from there to grab the edge of the container, pull up and get the food cache.

The next mine (4/10) for the Mine Sweeper Challenge is just a short way down the beach to the east. You can shoot it from the top of the cargo container if you like or from down on the beach. Just be sure to stand at a safe distance so Lara doesn't get hurt when it explodes.