What am I supposed to do at Stonehenge?


Hint 1 of 6:
Look at the sighting stone.

Hint 2 of 6:
Since it looks like a chair, you might want to sit on it.

Hint 3 of 6:
Do you think something important might happen in the next few hours?

Hint 4 of 6:
So why don't you wait for a while?

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