I did this tour in winter and the scenery was spectacular. The guide was very knowledgeable and friendly. However, you need to be reasonably fit as its not as easy as the brochure implies. The word 'canyon' gives you a clue - most of the walking is uphill and at times is quite steep. Iam a reasonably fit 50yr old and I struggled in some parts of the walk. You don't walk along the bottom of the canyon, you climb to the top. A good tour though.
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