[540] Hoosac Mountains (spr. hūsack mauntīns), Gebirgszug an der Westgrenze des nordamerikan. Staates Massachusetts, eine südliche Fortsetzung der Green Mountains (im Saddle Mountain 2110 m). Die Boston-Albany-Bahn durchschneidet ihn im 7,6 km langen Hoosactunnel, dem größten nordamerikanischen Eisenbahntunnel, der 1855–74 für 20,2 Mill. Doll. erbaut wurde.
Brockhaus-1911: Hoosac Mountains · Ozark Mountains · Rocky Mountains · White Mountains · Saguache Mountains · Cedar Mountains · Blue Mountains · Green Mountains · Cumberland Mountains
Herder-1854: White Mountains · Rocky Mountains
Meyers-1905: San Juan Mountains · Rocky Mountains · Ozark Mountains · White Mountains · Wahsatch Mountains · Uintah Mountains · Green Mountains · Catskill Mountains · Black Mountains · Big Horn Mountains · Elk Mountains · Cumbrian Mountains · Cedar Mountains
Pierer-1857: Rattle Snake Mountains · Rocky Mountains · Ragged Mountains · Peter-Mountains · Potatoe Mountains · White Mountains · Wind River Mountains · Wahsatch Mountains · Schooley's Mountains · Stony Mountains · Ozark Mountains · Cumberland-Mountains · Green Mountains · Cobequid Mountains · Blue Mountains · Cerne Mountains · Kittatinny Mountains · Lukkee Mountains · Kayaderosseras Mountains · Humboldt River Mountains · Iron Mountains