A dead drop
Clean, witty and universal

Solution

Because of it's simplicity and carefully placed elements it is a timeless representative of the idea of the project as well as appeal to all, on every level.
The dead drop in the logo is imagined as a standalone mascot that can be used on maps,  tees, with slogans for e.g. and at the same time the carrier of the initials of the brand (the small and the large letter "d").