What/where is Verriere

Ifigeneia Athanasopoulou
Hi I’m coming from abroad and is my first time. Can someone explain what and where is “Verriere” that is mentioned as the venue, for some activities I’m interested in? Thank you

Stella LEUWERS
Bonjour, c est à l intérieur du Grimaldi Forum .

Ifigeneia Athanasopoulou
Thank you!

Stella LEUWERS
De rien 😉