For example, here is documentary of my visit to the oasis of Raqo in Doollo, Somali region settled by this community [in a 4 year running drought, the oasis shows its value to its Marehan settlers] ;
Geocode of Raqo;

Raqo in a wider placement

The historical continuity of Raqo's settlement

Without further ado, here is the live webpage of my geocode + coordinates of "Marehan" settlements & localities in central Somalia and eastern Ethiopia.
I don't ever want to hear anymore anyone asking "where" Marehan live in any part of their land in this territory.
I freely give permission for anyone to use or download any of the material contained therein--- especially for humanitarian and/or social-cultural development purposes.
https://sites.google.com/view/map-of-marehan
The first page contains the map.
The second page contains a sheet of all the geocode + perimeter line.
Off you go into the Netsphere!