It is impossible to cross overland the border between Algeria and Morocco, it has been closed since 1994 following a political dispute.
Besides taking the plane, the only other option to go from Morocco to Algeria would be to take the ferry with a change in Spain.
Crossing on the south via Mauritania is strongly discouraged since the Sahara region is currently not safe.
Read the Wikipedia page Algeria-Morocco relations to get more information.
These 3 days safari to Nyungwe Forest National Park will start and end in Kigali. You’ll get the opportunity to visit the most popular and the core wildlife attraction in Nyungwe Forest National Park, Chimpanzees. Located in southwestern Rwanda, this park is among the diverse ecosystems in the country and has many other primates’ species.