France, April 27 -- In eastern Tunisia, near the coastal city of Sfax, hundreds of migrants from sub-Saharan Africa have been forced to move to nearby olive groves after authorities dismantled their camps earlier this month.

It's a familiar cycle - eviction, flight, rebuilding for these migrants, many of whomhave travelled long distances from countries across sub-Saharan Africa with one goal - to cross the Mediterranean Sea to reach Europe.

Tunisia's proximity to Italy has made it a key transit hub. With growing pressure from Europe to curb migration, the authorities are stepping up efforts to break up informal camps, especially around Sfax - a major departure point for boats.

At the "kilometre 22" camp in El Hamra -named for its dista...