Telescope

Michelle says: I know the way.
Jack extends his hand with the keys.
Wanna drive?
Sure.
She takes them and the four get in the truck. A few moments later, Michelle pulls onto the road in front of the bunker.
James asks: How far is it?
A decent bit. Used to be about an hour on the highway. If it's in even somewhat decent shape, I'd say we're gonna make it there in about that time.
She turns right at an intersection onto the on-ramp, saying:
Gonna find out very soon...

The pavement is cracked and has potholes, and the highway is partially overgrown but, despite this, its condition is somehow good enough. Michelle floors it and the remains of the city outskirts flies by. Within a few minutes, they make it out of Ivydale, leaving its valley behind. The mountains make way for an area of plains and low, smooth hills. She takes an exit onto another highway. The large, rusty signs above it still indicate the proximity of Sentinel Shores where they haven't faded completely.

The highway takes them north, around the western part of Ivydale's lower side. After a while, they approach what used to be the outskirts of Sentinel Shores and Michelle takes an exit, getting them onto a rural road. The observatory is located on a hill, now ahead of them; a small group of buildings in the distance. What symbol to put where that semicolon is? Keep the semicolon? A comma? A dash?

As they get closer, the buildings take distinct shapes. Two of them stand out: The one in the center holds a large geodesic dome and another one off to the side elegant description of an optical observatory?. The other buildings look mostly unremarkable.

Michelle parks the truck on what remains of the large paved area between the buildings and they get out. Trees and bushes grow all over the place, some even out of the windows and through the roofs of the buildings.

What now? They start exploring but where to they begin?