Manco Capac’s scouts return after a week… they report the sighting of at least two Horune pirate ships off the coast near one of the Arkhon compounds, sailing away from shore. More inland, they found various vehicle and power amor tracks leading from the shore into the hills off the coast. They suspect the cargo has been stored in one of the Arkhon mountain citadels, probably Stonefort.
The party follows the river into the mountains… the Anti-Monster knows of a back-door to the base.
Party is split! Half of the party goes into the base through an underwater opening, the other half is outside.