"Chamber of Secrets Locations" - Marauder's Map v7 Replica Extension
https://jan-hamernik.com/replicas/mar...
Marauder's Map v7 is a series of replicas (this is just an extension to one of them), each designed to match the film it appeared in, or including my very own custom designs and ideas.
There's over a decade of extensive research behind the replicas, for more (much more) information visit the link above.