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Libyan Desert

(Encyclopedia)Libyan Desert, northeast part of the Sahara Desert, NE Africa, in SW Egypt, E Libya, and NW Sudan; called the Western Desert in Egypt. It is a region of sand dunes, stony plains, and rocky plateaus. T...

O'Brien, Lucius Richard

(Encyclopedia)O'Brien, Lucius Richard, 1832–99, Canadian landscape painter. He worked in an architect's office and later became an engineer. He is noted for his watercolor landscapes, especially of Rocky Mt. scen...

Long, Stephen Harriman

(Encyclopedia)Long, Stephen Harriman, 1784–1864, American explorer, b. Hopkinton, N.H. As an army engineer, Long was sent on several exploring and surveying expeditions. The first in 1817 was to the region of the...

Colorado tick fever

(Encyclopedia)Colorado tick fever or mountain tick fever, acute disease caused by infection with a double-stranded RNA virus (a Coltvirus) that is transmitted to humans by Rocky Mountain wood ticks (Dermacentor and...

Cariboo Mountains

(Encyclopedia)Cariboo Mountains kărˈĭbo͞o [key], range, c.200 mi (320 km) long, E British Columbia, Canada, rising to 11,750 ft (3,582 m) at Mt. Sir Wilfrid Laurier. It runs roughly parallel with the main Rocky...

Chaudière Falls

(Encyclopedia)Chaudière Falls, in the Ottawa River in the heart of the city of Ottawa, Ont., Canada. The river is narrowed by rocky cliffs to a width of c.200 ft (60 m) and drops 50 ft (15 m) in a series of cascad...

Turner Valley

(Encyclopedia)Turner Valley, village (1991 pop. 1,352), SW Alta., Canada, at the foot of the Rocky Mts., on the Sheep River, SW of Calgary. It is in the center of the Turner Valley oil and natural gas fields, opene...

Skelligs

(Encyclopedia)Skelligs, rocky islands, off SW Republic of Ireland, in Co. Kerry, comprising Lemon Rock, Little Skellig, and Great Skellig. Climbing the rocks to the peaks of Great Skellig, also known as Skellig Mic...

Selkirk Mountains

(Encyclopedia)Selkirk Mountains, rugged range of the Rocky Mts., SE British Columbia, Canada, near the Alta. border and extending northwest c.200 mi (320 km) from the U.S. border. Mt. Sir Sanford (11,590 ft/3,533 m...

Oldman

(Encyclopedia)Oldman, river, c.250 mi (400 km) long, rising in the Rocky Mts., SW Alta., Canada, and flowing generally E past Lethbridge to join the Bow River W of Medicine Hat and form the South Saskatchewan River...