Mo Pah Wah Tuya!
This is a hike to an active spring with native California Fan Palms (Washingtonian Palm, Washingtonia filifera). The spring itself is very small, so if you plan to backpack camp nearby, bring your own water. Although this would generally be considered an easy day hike, I did it as an overnight backpack one time because I thought it would be fun to spend the night out there, and it was. There's a really good campsite above and just to the south of the grove. Nice views in every direction.
The route-finding for the hike is very easy at first: just follow the wash upstream. There are easy ways to follow it, and harder ways, but just follow it. Eventually, after almost 4 miles, it starts to narrow, and you climb up onto a bench, and then you will soon see the tops of the palms in the near distance. At this point you will have almost passed Mopah Peak. Once you see the palms, you may also find there is a trail on the top of the bench, made by burros and bighorn sheep on their way to water.
This is BLM land, and no permit is necessary to hike or camp.
Near the palms you may find signs of ancient Native Americans having camped nearby. They used pottery, they did flintknapping (made arrowheads), and they carved petroglyphs. If you find any pottery shards or any rock chips left over from flintknapping, please just take photos of these items and return them to where you found them. Never ever stack them in a pile on a flat rock, and if you find them stacked this way, scatter them! If you find any petroglyphs, take photos, do not touch. The oils from your hands can damage them.
On my several visits to the palms I hoped to see bighorn sheep, but saw none, and in fact, saw only very old droppings--nothing recent. Also, there are no recent signs of burros in the area.
WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.