Locality

12 miles southwest of Clanton.

63°50′ N., 152°00′ W., 60 miles northwest of
Mount McKinley.

55 miles east-southeast of Prescott.
12 miles northwest of Little Rock.
35 miles northeast of Madera.

30 miles northwest of Pikes Peak.
At East Berlin.

11 miles south of Dover.

Near Fourth and L Streets NW.
12 miles north-northwest of Brookville.

18 miles southeast of Macon.

20°15' N., 156°20′ W., off Maui Island.
At Custer, southwest of Challis.

28 miles northeast of Springfield.

14 miles north-northwest of Indianapolis.

5 miles northeast of Ames.

15 miles northeast of Great Bend.

3 miles north-northwest of Lebanon.

3 miles southeast of Marksville.
18 miles north of Dover.

41⁄2 miles northwest of Davidson ville.
North part of city of Worcester.
5 miles north-northwest of Cadillac.
10 miles southwest of Brainerd.
9 miles west-northwest of Carthage.

20 miles southwest of Jefferson City.
12 miles west of Lewistown.

10 miles northwest of Broken Bow.
24 miles southeast of Austin.
3 miles east of Ashland.

5 miles southeast of Trenton.

12 miles south-southwest of Willard.
6 miles south-southeast of Oneida.
10 miles northwest of Sanford.
5 miles southwest of McClusky.

25 miles north-northeast of Columbus.
8 miles north of Oklahoma City.
25 miles south-southeast of Prineville.
21⁄2 miles southwest of Bellefonte.
1 mile south-southwest of Crompton.

13 miles southeast of Columbia.

8 miles northeast of Pierre.

5 miles northeast of Murfreesboro.
15 miles northeast of Brady.

3 miles north of Manti.

3 miles east of Roxbury.

5 miles southwest of Buckingham.

10 miles west-southwest of Wenatchee.

4 miles east of Sutton.

9 miles southeast of Marsfield.

58 miles east-northeast of Lander.

EXTREME AND MEAN ALTITUDES OF U.S. TERRITORY AND

THE CONTINENTS

The following altitudes (table 6), which give the height of the land above sea level, unless otherwise stated, were determined by the Geological Survey. Inasmuch as the United States is not entirely mapped, the locations of the highest and lowest points, as well as the values given for some of the points, are doubtful and are subject to change as the areas are mapped.

FIGURE 34.-Mount Rainier, altitude 14,410 feet, highest point in the State of Washington.

The following list (table 7) is given to permit a comparison between altitudes in the United States and those in other parts of the worid. These figures are subject to change as better maps become available. However, the information on North America is accurate.

The altitude of Mount Everest was reported to the National Geographic Society by Brigadier I. H. R. Wilson, Surveyor General of India, as 29,028 feet. This determination was made by the Survey of India from observations and calculations in 1952-54. An accurate altitude for the summit of a mountain as high and as inaccessible as Everest is difficult to obtain. Corrections must be made to the observed altitude for refraction of the atmosphere, the shape of the geoid, and the varying amount of snow on the peak. For discussions of the height of Mount Everest, see De Graaff-Hunter (1955) and Gulatee (1954). (See fig. 37.)

The greatest ocean depth thus far discovered is in the Mariana Trench in the Pacific, about 200 miles southwest of Guam (lat 11°21′ N., long 142°12′ E.). It has been called the Challenger Deep. The depth, measured by soundings in 1957, is 6,033+ fathoms, or 36,201 feet, and this value is generally accepted by scientific organizations. In 1960 the bathyscaph "Trieste" descended to the ocean floor in the same locality. It registered a depth of 5,967 fathoms-35,802 feet. (For a description of this descent, see Piccard, 1960, p. 224.) The greatest confirmed depth recorded in the Atlantic is 4,583 fathoms (27,498 feet). The position of this depth is in the Puerto Rico Trench, about 90 miles northeast of the eastern end of the Dominican Republic, at lat 19°42′ N., long 67°05′ W.