A caravan.
In the desert, that would be an oasis.
The opening procession of all the toreros is called a paseo.
A large public procession is called a parade.
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St Andrews University in Scotland
Depends on the purpose. A funeral procession, for example, is called a funeral procession. Otherwise, you could be thinking of a parade, you could be thinking of a convoy, you could be thinking of a traffic jam, etc.
A caravan
It can be called many things, one typical word used for a liturgical procession is "Cortege".
It is called nutrition
You have to bring your water with you when you go into the Sahara desert. However there are a few places which, if you know their location, do have fossil water (in an aquifer) present at the surface. These places are called oases.
The Eastern Desert
nomads or a caravan