Shastina is a satellite cone of Mount Shasta. It is the second youngest of four overlapping volcanic cones which together form the most voluminous stratovolcano in the Cascade Range. At 12,335 feet (3,760 m), Shastina is taller than Mount Adams and would rank as the third highest volcano in the Cascades behind Mount Rainier and Shasta were it not nestled on the western flank of its higher neighbor. Shastina has a topographic prominence of over 450 ft (137 m) above the saddle connecting it with Shasta and easily exceeds the typical mountaineering standard of 300 feet (91 m) for a peak to qualify as an independent summit, yet most lists of Cascade volcanoes omit it nonetheless. The name "Shastina" is a diminutive of Shasta.
Mount Shasta ( SHASS-tə; Shasta: Waka-nunee-Tuki-wuki; Karuk: Úytaahkoo) is a potentially active stratovolcano at the southern end of the Cascade Range in Siskiyou County, California. At an elevation of 14,179 ft (4,322 m), it is the second-highest peak in the Cascades and the fifth-highest in the state. Mount Shasta has an estimated volume of 85 cubic miles (350 cubic kilometers), which makes it the most voluminous stratovolcano in the Cascade Volcanic Arc. The mountain and surrounding area are part of the Shasta–Trinity National Forest.
The Mount Shasta Wilderness is a 38,200-acre (155 km2) federally designated wilderness area located 5 miles (8.0 km) east of Mount Shasta City in northern California. The US Congress passed the 1984 California Wilderness Act that set aside the Mount Shasta Wilderness. The US Forest Service is the managing agency as the wilderness is within the Shasta-Trinity National Forest. The area is named for and is dominated by the Mount Shasta volcano which reaches a traditionally quoted height of 14,162 feet (4,317 m) above sea level, but official sources give values ranging from 14,104 feet (4,299 m) from one USGS project, to 14,179 feet (4,322 m) via the NOAA. Mount Shasta is one of only two peaks in the state over 14,000 feet (4,300 m) outside the Sierra Nevada Mountain Range. The other summit is White Mountain Peak in the Great Basin of east-central California.
The Bolam Glacier is a glacier situated on the northern flank of Mount Shasta, in the U.S. state of California. It is the second longest glacier in California behind the nearby Whitney Glacier, and the fourth largest and most voluminous after the neighboring Hotlum Glacier, Whitney Glacier, and Wintun Glacier. The Bolam Glacier flows from a cirque on the north side of Mount Shasta's main summit, with the moving ice starting below a large bergschrund which spans the glacier at 12,600 ft (3,800 m). Above that, permanent snow and ice extends towards the summit to about 13,500 ft (4,100 m). The glacier flows north down a steep slope and terminates near 9,800 ft (3,000 m). It has a contributing drainage area of 1.03 km2.
The Hotlum Glacier is a glacier situated on the northeast flank of Mount Shasta, in the US state of California. It is the largest and most voluminous glacier in California, although not as thick or long as the nearby Whitney Glacier. The Hotlum Glacier flows from a large cirque on the northeast side of Mount Shasta's main summit below the Hotlum Headwall at roughly 13,600 ft (4,100 m). It flows northeastward down the steep slope, forming three lobes which terminate near 10,400 ft (3,200 m).
The Konwakiton Glacier is a glacier situated on the southern flank of Mount Shasta, in the U.S. state of California. It occupies the head of a large cirque on the south side of Shasta's Misery Hill cone, just northeast of the prominent outcrop of Thumb Rock at about 11,500 ft (3,500 m). It is the fifth largest glacier on Mount Shasta, although less than one-third the size of any of the four larger ones (Whitney, Bolam, Hotlum, and Wintun). The Konwakiton is the most frequently visited of Shasta's glaciers, since the standard climbing route up Avalanche Gulch skirts along its western edge above Thumb Rock saddle, with the boot track often only a few feet (about a meter) from the bergschrund at the glacier's head.
The Mud Creek Glacier is the southernmost glacier on Mount Shasta in the U.S. state of California. It lies to the east of Sargents Ridge on Shastarama point near 10,915 feet (3,327 m) above sea level. The glacier is smaller than the northern ones on Mount Shasta such as Whitney, Hotlum, Bolam, and Wintun Glaciers. There are approximately 80 glaciers in California and unlike the glaciers in Alaska, Colorado and Montana. California’s existing current glaciers are not remnants of the Pleistocene, but instead relatively young approximately 1,000 years in age. The Mud Creek Glacier is one of at least 7 recognized glaciers on Mt. Shasta by the United States Geological Survey (USGS) the rest being: Whitney, Hotlum, Bolam, Wintun, Konwakiton, and Watkins.
The Watkins Glacier is a glacier situated on the southeastern flank of Mount Shasta, in the U.S. state of California. It occupies a small cirque in the Clear Creek drainage. It is the smallest officially-named glacier on Mount Shasta, and it was not accorded that status until 1976, following a decades-long campaign by local resident R. Harry Watkins, Jr., to bring recognition to the previously-ignored glacier.
The Whitney Glacier is a glacier situated on Mount Shasta, in the U.S. state of California. The Whitney Glacier is the longest glacier and the only valley glacier in California. In area and volume, it ranks second in the state behind the nearby Hotlum Glacier. In 1986, the glacier was measured to be 126 ft (38 m) deep and over three km in length. The glacier starts on Mount Shasta's Misery Hill at 13,700 ft (4,200 m) and flows northwestward down to the saddle between Mount Shasta and Shastina, where uneven ground causes a major icefall at 11,800 ft (3,600 m). It then flows down the valley between the two peaks, reaching its terminus at 9,500 to 9,800 ft (2,900 to 3,000 m).
The Wintun Glacier is a glacier situated on the eastern flank of Mount Shasta, in the U.S. state of California. It is both the third largest and third most voluminous glacier in California after the neighboring Hotlum Glacier and the Whitney Glacier. The Wintun Glacier starts on the east side of Mount Shasta's main summit, and it has the highest permanent snow and ice on the mountain, reaching above 14,100 ft (4,300 m) to within a few dozen feet (~8–15 m) of the true summit. The glacier flows east down a steep slope and terminates in two lobes, the longer of which extends down near 9,800 ft (3,000 m).