Brain Lord/Abell ruins

Back in Arcs
You'll be back at the inn with the rest of the adventurers who went to the Tower of Light. The main thing of importance is the poster on the wall. They want people to explore the Ancient Ruins and find something. Yup, that's your next destination but you won't find a road that leads there like the last one. Instead you'll have to do some "underground" investigation to find the way.

Go see the blacksmith on the far left side of Arcs and talk to him. He'll tell you that the price of Dragon Scales has dropped considerably since the other adventurers came back to town and sold lots to him. He'll offer you 2000 gold for each Dragon Scale you have. This is the best price you'll get so you might as well sell them now. After you do he'll tell you about the tunnel he was digging in his spare time that leads to the Ancient Ruins. You can't reach the Ancient Ruins yet since he already mentioned the rocks that are blocking the path.

However he'll also mention that an Axe may destroy the rocks blocking the way. So, go find an Axe. Hint: you'll find one in the basement of the tool shop, where the guy was selling weapons he didn't have in the first place. Note that you can't go to Barn the weapons dealer until you talk to the blacksmith. He won't have anything on sale until you do. So, once the conversation with Marlon is over, go over to the tools shop, then head downstairs and buy the Battle axe from Barn.

No, do not buy the Boomerang, you'll find it for free later. Head back upstairs and talk to the Tools shop guy to stock up on items for the journey to the Ancient Ruins. Let's see, you'll need a good few of the following: Cape Herb and Antidote Herb. After that's done go check out the Magic Shop. There's some interesting magic here, so buy as many spells as you can.

Cave to the ruins
Once that's done you're ready to go! Return to the blacksmith's and into the tunnel he carved out. Once there use the Axe on the rocks to smash them so you can continue on. The caves beyond the tunnel are, unfortunately, non-linear so a map out of the area is probably best. The trolls here are easy to kill but watch out for the Scorpions, they hit pretty hard and they'll poison you to boot!