When he got back to the stone the next day, he crushed a second serpent head and found a silver key.

第二天，小伙子又来到石头那里，砸开了第二个蛇头，里面是一把银钥匙。

youdao

What at first glance appears to be a jumble of boulders was probably a workshop where expert stonecutters practiced their trade. (One chunk of granite has been carved into almost-finished steps.) Another large stone, known as Serpent Rock, has snakes etched into its top surface.

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