Even if this new tablet is in Hamtunscire (suggested power: 340), you can still go whenever you want. These Assassin's Creed Valhalla trials never require you to take out your weapons. Go to the place indicated below, and go ahead for a bit of jumping.
Red Lichen Cavern
Another tablet that will be recovered in no time. After the usual small session of platforms, you'll notice different clouds of toxic gas obstructing the passage.
The solution is very simple: take a torch, throw it on the gas so that it explodes, then trace your route. It should take you 10 minutes to recover this tablet.
Original content by Bastien "Lloyd" Dubosq-Luyer.
Your quest to find Excalibur in Assassin's Creed Valhalla will take you to Essexe and more specifically to the Old Cellar. There you'll need to find a tablet.