Gareth frowned and began to think. He was aware of how riddles could refer to less obvious meanings. Bank could mean a river bank or a bank for money. But he didn't know a bank that might be specified with that description and the town had a river after all. "Well, bank must be the western river bank of the Esk. If it's under a bank... perhaps it refers to the wooden staithes? It's underneath there?" It was a long shot, but the riddle was harder than he had expected. Farris didn't ring any bells.