From the rules:
active During your turn, only these cards in play are active:
• sites on the adventure path,
• sites in any player's support area, • your Free Peoples cards,
• your copy of The One Ring, and
• your opponents' Shadow cards.
All other cards in play are inactive. Inactive cards
are not affected by the game and do not affect the
game. Any tokens on them are ignored (such as
burdens, culture tokens, threats, and wounds).
This effectively means that you can spot a site in your support area and thus use
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