Can anybody translate this for me: "maar ik gestopt bij het klein strand"?

Asked by deni (23141) October 13th, 2015 from iPhone

I don’t know what language it’s in and I tried google and thought maybe Dutch or German? Is Dutch even a language? Anyhow I am trying to win a contest that is offering clues as to where to find this hidden rock and I really need to figure out what this means! I would so appreciate ANY help!

Thanks guys!!!