maester stevnen, since the summer islanders are such good seafarers, do you think its possible they have found new habitable land, and maybe even people and just haven’t told anybody yet? if so, why keep it a secret, to have a monopoly on the unique resources of that place?

I mean, the Summer Islanders do have the best maps on Planetos, so they probably know more about Sothoryos and Ulthos than others, but I don’t think they’ve found Americos necessarily. 

Moreover, the Summer Islanders seem very much not in the colonial mindset, given their history, and seem content to live on the islands that support them comfortably, while freely trading with the outside world. 

Would that more nations would follow their lead…