This page offers a guide on where to locate and how to complete Medeuuage Megaliths, a mystery found in Cent, AC Valhalla.
Align the Symbol
This mystery is located directly east of Tonbridge Monastery. This mystery requires that you align the pattern on the rocks to match the symbol on the smaller rock at the center. Before you go ahead and align the symbol, you might actually want to first deal with the sleeping bear nearby. It is a lone bear so it shouldn’t be a difficult fight.
To align the symbol you’ll want to face the stones, from the east (so you’re facing the west). There’s a bald piece of land near the outskirt of the stone circle that offers a good starting spot. Then, from there you’ll just want to readjust until the camera zooms in and the symbol glows brightly.