The starting beacon is located on a rock in the river, near a waterfall. Bentley wants Sly to check out the cabin above the cliff close by. To climb up the cliff, Sly can latch onto the wall hooks found along it, lean back, and then swing upwards.
Jean Bison is walking around inside the cabin, engaging in a lengthy conversation with Arpeggio over his radio. Stay out of Bison's sight by crawling under the tables, staying in the corners, or climbing up to the joists.
Sly needs to take three photos, preferably from the joists:
Iron Horse 1 Route Map - One of the schematics hanging on the side of the cabin with the door.
Iron Horse 2 Route Map - The other of the schematics hanging on the side of the cabin with the door.
Iron Horse 3 Route Map - The schematic hanging on the rear side of the cabin, near the fireplace.
After Sly takes all the photos, Bentley will want him to search the trophy fish above the fireplace. Take the Iron Horse Blueprint from this fish. Afterwards, Sly has
