BARK FROM AN OAK TREE

THIS IS A PIECE OF BARK FROM AN OAK TREE.DOES NOT LOOK MUCH? SIZE IS 7 INCH X 10 INCH.THIS BARK IS PROBABLY 25 TO 30 YEARS OLD BEFORE THE TREE WAS CUT DOWN.ONLY GOT IT YESTERDAY SUNDAY AT A  AGRICULTURE SHOW IN THE NORTH OF ENGLAND.SEE LATER WHAT I WILL MAKE FROM IT.