The archaeologists also found remains of two wooden clubs, one the shape of a baseball bat and made of ash, the second the shape of a croquet mallet and made of sloe wood.
考古学家还发现了两根遗留下来的木棒，其中一只具有棒球棒的形状，由白蜡木制成。 另一只具有槌球锤的外形，由黑刺李木制成。
SEM images indicate that the morphologies of tunnel pits are transformed from the shape like as a cone to a baseball bat after adding PSSA.
隧道孔由孔口大、孔内小的“锥子”状转变为孔口小、孔内大的“垒球棒”状。
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