Try this one...
A Scout base on the planet
Lampetia named for an Epimeliad or Apple Tree spirit, a fairly isolated world has been there a couple of centuries in an area left undeveloped by the local stellar government. The area has many anomalies and was the territory of an older society that disappeared mysteriously, so caution was preferred.
Early in the Base's history it kicked off the terraformation of Lampetia was started by the Base and given that the Planet already had unicellular life, tectonic activity, and open water, went very well and quickly.
Small groups of settlers came to Lampetia and built farming comunities on the same continent as the Base (which gained the name
Allantide Base in keeping with the apple theme, earlier it simply had a number). In the last century small groups of settlers, mainly humans and parahumans, have settled widely over the planet.
Now the local sector is being opened up to intensive exploration and discovery. A hostile interstellar power is threatening the home government. In order to be able to afford the needed military build up the government needs to expand its tax base and resource base. An unexplored sector so near the core worlds was simply to good to be passed up on.
Basically this is a new frontier built over an ancient empire setting. Allantide Base has a sort of Baghdad on the Thames vibe. It's the normal small (your nationality here) city except otherworld strangeness pours in from the landing field. The scouts, often locals, are sent out to deliver mail and supplies to explorers and other colonies as well as to map large areas. As scouts the PCs are combination Postal Carriers, Mounties, Messengers, and Rescue Workers.