9am - 5pm on Sunday
Yes they are open on Sundays, but it does not hurt to call them incase a fire started or if a special event is scheduled. I went there on my vacation & if you have not been there in a while or a newbie, take time to take in all the beauty of nature has to offer. Have a great time if you go. Added.: the day I went my cousin who lives in AZ wanted to take me on 2 trails but they were closed off due to a heavy rain day & caused some mudslides, etc. But what I was able to see & try to conquer some of my fear of heights was a plus on the only main trail opened which I got to see some beautiful natural creations / views.
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