A medium cache container in an area deserted for a long time. The cache container should accomodate must TBs and GCs. Its a quick drive in a 4x4 or SUV, not ideal for sedan but possible with care and some walking.
This was set up in the are of my kids school so I can check it relatively frequently, and an area no one really goes. That said, construction is always a possibility with no notice. The container is an old fish food plastic with some goodies inside and pad suitable for stamping your caching logo / name.