Handy Hal's is a named store location in Days Gone. The wiki gives no region, mission or collectible for it, so treat it as a scavenging stop only.
Like most named stores, it is worth a quick sweep for crafting parts and scrap if you pass by.
Image: Bend Studio / PlayStationBelknap Tunnel
Belknap Tunnel is the road tunnel linking the Cascade and Belknap regions. Swarmers lurk inside, so ride through with a plan, and you pass through it during the story mission Bad Way To Go Out.
Big Mountain Travel Center
Big Mountain Travel Center is a truck stop in Chemult on Highway 97. It has no mission of its own. Chemult is still worth a scavenging run if you keep clear of the Horde at the train station.
Black Mountain Ridge
Black Mountain Ridge is a spot in the Iron Butte valley with a historical marker about Iron Butte itself, an old volcano. Stop by if you are filling out the historical marker collection.
Brick Oven Pizza & Pub
Brick Oven Pizza & Pub is a pizza place and bar in Chemult on Highway 97. It has no mission of its own. Chemult is still worth a scavenging run if you keep clear of the Horde at the train station.