Dear fellow travellers,
I plan to visit some National Parks and other sights in California and southwestern US in September 2018:
- Sequoia and King's Canyon
- Antelope Canyon
Do you know if any of them are tour-access only (and have to be booked in advance)? So far I found out that Antelope Canyon can only be visited with a guided tour, and at the planned date I will be there only few tour slots are available.
Also, do you know at which Parks there are official tours one should take (and has to book in advance)?
Best regards and thanks for your answers,