1. The Yosemite is famous for its natural wonders.

2. Yosemite Valley is famous for its natural wonders.
3. Yosemite National Park is famous for its natural wonders.
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Do we put 'The' before Yosemite? Does #1 mean #2 or #3?

I'd say all are ok.

"The Yosemite" would indicate the general area where the Park is located.

The valley probably includes more area than the park alone, but would indeed be called by its name, without "the."

“The” is not used when referring to either Yosemite Valley or Yosemite National Park.

If you look at the whole park on a map, you see that Yosemite Valley is one part of the whole. Another part is called Tuolumne Meadows. And there are more named sections.

https://images.app.goo.gl/nW6bX97vxnTtGrme9

In English, when referring to a specific place, we often use "the" before the name. However, in the case of Yosemite, it can be used with or without "the" depending on the context.

1. "The Yosemite" is an older, poetic way of referring to Yosemite National Park. It was commonly used in the past, but it is less commonly used today. So, while technically correct, it's not as commonly used as the other options.

2. "Yosemite Valley" is a specific area within Yosemite National Park known for its natural wonders, such as iconic rock formations like El Capitan and Half Dome. This option refers to a specific part of Yosemite National Park.

3. "Yosemite National Park" refers to the entire park, including Yosemite Valley, as well as other natural wonders like waterfalls, meadows, and forests. This option encompasses the entirety of the park.

To answer your second question, #1 is not specifically referring to #2 or #3. It is a more general statement that can apply to both #2 and #3, depending on the context.