The problem with the Rheris crossing is that it changes, often dramatically, each year. Twice I've tried the crossing and twice reluctantly turned back. I'm normally up for most things, but was riding solo and with luggage for a six week trip.

So the route I've taken in the past is to head west from Rissani on the RN17 (erroneously labelled N12 on Google) until N31° 16.201' W4° 21.940' where you can see Gara Medour (The Mummy) in the distance on the right, see attached map.

Turn south here on a well-defined track per video below.



I didn't have any route advice but I remembered watching this track being used as a special stage in the 2006 Dakar Rally, so I assumed it led somewhere!

Quite a bit further on there was some bad sand at N31° 04.109' W4° 32.729' but I just rode round the worst of it. You then come onto a vast flat where you can close your eyes and open the throttle as there's absolutely nothing in any direction.



Towards the end of the video clip above, I could make out a building which turned out to be Auberge Petit Dunes at N30° 53.290' W4° 37.195'

I could have stopped for tea, but carried on south and came to the only waypoint I had worked out in advance which was Foum Mharech where in times of flash floods there's a river through a gorge (foum means mouth).

I stayed at Auberge Oasis Mharech which I can recommend at N30° 45.587' W4° 33.807'

You are now almost level with the Rheris crossing, so carry on south then west to Sidi Ali Tafraoute where there's fuel in cans, then west to Oumjrane and on to Zagora.

The red track on the second attachment shows Petit Dunes and Oasis Mharech auberges and the onward route. The blue track shows Ramlia and the dotted-line crossing by Hasi Ba Hallou might be the one @Vincent Trautmann refers to. There are also some other crossings not so far north that are shown on OpenStreetMap.

Attached Thumbnails

 

 

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"For sheer delight there is nothing like altitude; it gives one the thrill of adventure
and enlarges the world in which you live," Irving Mather (1892-1966)