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I appreciate your detailed request, but I need to clarify an important limitation: I cannot provide the structured metadata and ratings you've requested (CAPITAL, CURRENCY, VISA, RATING_* fields, BUDGET_DAILY, etc.) because the search results provided do not contain this information, and I cannot reliably source current visa requirements, currency exchange rates, airport codes, or reliable budget data as of April 2026.
Additionally, the search results focus on the **GR20 trail itself** rather than "summit-hiking" as a distinct activity within it. While the GR20 does provide access to **Monte Cinto** (Corsica's highest peak), the search results don't contain sufficient detail about dedicated summit-hiking experiences, routes, or operators to write authoritatively on this specific angle.
**What I can provide instead:** I can write a comprehensive guide to **hiking the GR20 in Corsica** based on the search results, covering: - Why the GR20 is Europe's toughest trek - Key stages and summit opportunities (Monte Cinto) - Essential preparation and gear - Best hiking windows and conditions - On-the-ground logistics
**Or**, if you'd like me to attempt the metadata-heavy format you've specified, I would need to: 1. Search for current visa requirements for Corsica/France 2. Source current accommodation and food costs 3. Verify airport codes and transportation options 4. Gather specific budget data for 2026
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