A stunning location - I prefer this spot to the red dunes. If you are on a Jeep Tour the time (usually 30 min) should be sufficient to find the cache, see the beautiful spots and walk back in time.
Just follow the stream and enjoy the breathtaking views. You can't go astray - there is only one direction :-)
You will need to wade in the stream - it is very shallow (10-30 cm) so normally you will not wet your knees. I came here with a family with a 8 year old and a 65 year old grandma who experienced no problems. I have not been here in the rainy season it might be different then. Always remember though: no cache is worth risking your health. Please wear appropriate footwear - or go bare-footed like most people do and carry your flip flops . Now before I scare you - it really is an easy walk except the final meters to get to the cache .
the cache is hidden on higher ground - You will have to climb a bit (altitude ca. 10 m). The locals are closely watching tourists and are very curious. So please, be sensible.