Mooney Falls is the tallest of the five wonderful waterfalls located along Havasu Creek in the Grand Canyon. Hiking down to Mooney Falls is a great, short adventure when camping at the Havasu Canyon Campground. Not only that, it is certainly the most adventurous to reach, requiring travelers to hike down through a menacing passageway cut through the side of the canyon wall by miners at the turn of the 20th century. Descend to Mooney Falls at your own risk! That said, it's well worth the adventure. Make sure to venture down to Beaver Falls and the many cascades in between!
When you go, be sure to go early in the morning to beat the rush. It is a one-way route down to Mooney Falls and the wait can get quite long at peak times. You don't want to go at rush hour (varies seasonally) and you definitely don't want to make like a salmon and go against the flow on this route!
Hands down, Havasu Canyon is my favorite destination in Arizona. It is both a haven of serenity and source of boundless adventures for over 20,000 visitors each year. I have ventured into Havasu Canyon with groups as small as four and as large as one hundred and thirty (yes, 130) and have found each format equally enjoyable in its own right. Havasu Falls is great, but it is only one of the five major waterfalls in Havasu Canyon. Be sure to check out Upper Navajo Falls, Lower Navajo Falls, Mooney Falls, and Beaver Falls!
The best money you will pay on this trip is to have the mules carry all your gear...save your back, add to your enjoyment, and fuel the local economy all at once! :-)