Hello, I am Cthulhu Architect and I design modern maps. I always wanted to design maps for official scenario and now thanks to Chaosium Inc. I am able to release my maps on Miskatonic Repository on DriveThruRPG. My plan is to release the maps for all the scenarios from Doors to Darkness.
I just released Scenario Map Pack #1 - The Darkness Beneath the Hill. That includes all the maps you need to play that scenario from Doors to Darkness scenario book.
You can have a look here - https://www.drivethrurpg.com/product/353984/Cthulhu-Maps--Scenario-Map-Pack-1--The-Darkness-Beneath-the-Hill