Pena Tu is a cool little monument to check out if you happen to be passing through the Llanes region via highway 634. It's kind of hard to give specific directions because it doesn't have an official address. There are signs off the highway directing you to it. PENA Tu is a giant rock with Neolithic Bronze Age art on it. It's free, so it's worth stopping for 15 minutes to check out if you happen to be in the area. There's nice views from the platform as well. read more