Welcome to "Seaton Jurassic Park". Sadly, "Seaton Jurassic" has gone the way of the dinosaurs and no longer exists, but you can now "Park" very close to GZ for a quick cache and dash. Have you seen what I've done there?
Although the building is now closed, you can still see the remains of one of its star attractions right outside the main doors which is a few steps up from GZ. Please ensure that you properly replace the cache nicely hidden away from muggles, otherwise I fear that the container may also go the way of the dinsoaurs and disappear.