This video is about reptiles in France and Tunisia.
It is a tunnel under the N310 motorway and a bicycle track, preventing crossing animals from being killed by traffic.
Research at various times in 2012-2014 proves much wildlife, especially lizards, use the tunnel. 16 viviparous lizards used the tunnel. Once, even at least five young viviparous lizards were born in the tunnel. Other species: four sand lizards; one slow worm; two adders; one moor frog; one European toad; one Alpine newt. Also, one smooth snake was seen.
Results of the research were published in the Zeitschrift für Feldherpetologie.