This quest with Supplies for Monkey Idol appears after the player tries to use the Master Key to open the ruins of El Dorado.
Pickup Supplies from Supply Boats.
Start the Treasure Trails Expedition.
Finish the Treasure Trails Expedition.
Place your Curious Dig Site.
Place your Exotic Dig Site.
Research both of your Dig Sites.
Upgrade your Machete at the Tool Shop.