Which of these geographical features was genuinely incorporated into a company's logo design?

Logos are powerful visual representations of brands that often incorporate geographical elements to connect with local markets or showcase their heritage. Some of the world's most recognized brands have subtly integrated maps, landmarks, or geographical features into their logos, creating unique identities that resonate globally. This trivia challenges your knowledge about how geography has influenced iconic logo designs throughout history. Can you identify which geographical feature was authentically incorporated into a famous brand's logo?

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The Amazon River's exact flow pattern in the Amazon.com smile/arrow
The Matterhorn mountain silhouette in the Toblerone logo
The Mediterranean coastline outline in the Airbnb symbol
The Grand Canyon's topographical layers in the Firefox logo's color gradient