The encrypted map

Encrypt: /ɛnˈkrɪpt/ convert (information or data) into a code, especially to prevent unauthorized access. “all calls will be digitally encrypted to make eavesdropping impossible”

Antique: /anˈtiːk/ a collectable object such as a piece of furniture or work of art that has a high value because of its age and quality. “Pauline loves collecting antiques”

Thesis: /ˈthēsis/ A statement or theory that is put forward as a premise to be maintained or proved.

Unauthorized /ʌnˈɔːθərʌɪzd/ not having official permission or approval. “unauthorized access to the computer system”

Chamber /ˈtʃeɪmbə/ a large room used for formal or public events. “a council chamber”