Neponset Park consists of two small one-room cabins next to the shore and a camper slightly to the west. The most singular feature of the area is the enemies, which include a mirelurk king, a mirelurk hunter and several common mirelurks. There are also two barnacle traps: one just outside the southern house and one just inside the camper.
The personal terminal entries also appear in the main locked cabin where the author of the entries, Charles Dieter Jr., mentions Quincy Quarries constantly working next door. If the Sole Survivor chooses to travel to the quarry, they will find that it was being built very hastily, as it was intended to bury and conceal several tons of nuclear waste, causing it to be irradiated.
- A suit of leveled power armor is located just northwest of this location. It is underwater, in a pond beneath the overpass. Look for the pond that also contains a partially submerged, rusted APC. Alternately, head directly north from the small refueling station near the road to Neponset Park.
- Neponset cabin key - Next to Charles Dieter Jr., a corpse south of the park, below the highway overpass.
- Park sign in, a note inside the small trailer by the road, on top of a desk, where the barnacle trap is.
- Quartermastery - Scribe Haylen can potentially send the Sole Survivor here to recover a piece of technology.
Neponset Park only appears in Fallout 4.