5? 10?, ???? ?? ??? ??? ????? ???(木棧道)? ?????? ????? ????. ??, ??? ????? ???????? ?????. ??? ??? ????? ????? ?? ??, ?? ??? ???? ?? ???? ????? ??? ???????? ?????? ??????? ??? ???? ????? ??????? 5???? ?? ??? ????. ???? ??? ??? ??? ???????? ??? ??????? ??? ??? ? ??? ???? ???? ????? ????? 3?????? 6????? ????? ?? ??? ????? ??????? ??????.