I am not a botanist and cannot say from the pictures but that might as well have been a european sweet chestnut, as its outside of the natural range either way

I am not a botanist and cannot say from the pictures but that might as well have been a european sweet chestnut, as its outside of the natural range either way and the european is probably more common. https://en.wikipedia.org/wiki/Castanea_sativa https://en.wikipedia.org/wiki/Castanea_sativa