Firewood! Sorry i had to be the first! Bark looks like basswood. Basswood wood is very light color wise. Not enough experience with it to say the wood can be different colors.
Big leaf maple. Edited to add: it's one of the best firewoods of our commonly available native NW species.
I'll find out when the people get back home, this next week. Or, i'll take a chunk out to the local forester and see what he says.
i'd be willing to bet all wood would be very wet this time of the year. Saps way up, spring is just around the corner. 2 wks ago, maples were bleeding like no tomorrow as soon as they were cut.