One of the caches placed to coincide with the KT106 - Welcome Back 🥳 event held on 25th August 2021.

Something is not allowed here. Do you know what it is? Are there any signs?
Using A = 1, B = 2, etc. the seven letter word for the prohibited activity = ABCDEFG
The final location = N 53° 23.(A+1) (G+1) (E-2) W 2° 26.(C-A) (E-G) (D-5)
Checksum of the calculated digits = 28