Return in a couple of days or help with the dig. Third dig site Return the survey tool to Professor Marassi. When you hit the right spot a banner will appear marking the place. The third one is next to the Dwemer Dig Site. The second time, it is a building to the east behind the main tent. The first time, it is a building to the north.
A pop-up will say how far away you are from the optimal site. Open up your inventory and use the survey tool you received. The third time the entrance to Rkund will be uncovered. The following steps will repeat for a total of three dig sites. An easy way to reach it is going through Darklight Tower, when exiting at the top of the Tower follow the path to the left until you see the Excavations camp. The excavation site is south-west of Riften up in the mountains. 6.4 Escort the explorers to the transmutation forge by way of the transport device.6.3 Bring the explorers back through the transport device.6.2 Find a way to get the Explorers to the Tower.3.3 Find the Cog Keys and where they are used.2.3 Return in a couple of days or help with the dig.2.2 Return the survey tool to Professor Marassi.