In the description of the Norse exploration of America, there are two places mentioned, "Hop" and "Straumfjord", with some relationship to the same mountains.
E.g. The finding of Wineland the Good, p. 50:
They concluded that the mountains of Hop, and those which they had now found, formed one chain, and this appeared to be so because they were about an equal distance removed from Streamfirth, in either direction.
According to the interpretation by Kåre Prytz these places are Boston, Massachusetts (Straumfjord) and Rhode Island (Hop), and the meaning of the text is that (1) the three locations (Boston, R.I., the mountains) form an equilateral triangle, and (2) the mountains are visible from both Boston and R.I.
Casual inspection of a map suggests this might well be accurate, but I am wondering if the exact peaks can be pinned down more specificly?