Places: CA-Pinnacles

Pinnacles-1,995' (North Chalone Peak)   (

36.4874651,

-121.2013123)

Little Pinnacles-2,087' (North Chalone Peak)   (36.4741316, -121.1782551)
Old Pinnacles Trail-1,043' (North Chalone Peak)   (36.4974647 -121.1760329)
Pinnacles National park-1,896' (North Chalone Peak)   (36.4903965 -121.1811675)


Description:
From GNIS:

• Old Pinnacles Trail: Easy hiking trail connects Chalone Creek picnic area and Balconies Trail.
•  Pinnacles Rocks:
• These rocks are part of the remains of an ancient volcano.
• Descriptively named for the distinctive spires and crags that rise up from the surrounding smooth, round hills. The feature called High Peaks is located within Pinnacle Rocks in the Gabilan Range, 4.8 km (3.2 mi) N of North Chalone Peak.
• Also Called:
• High Peaks:
• The Pinnacles: Hoover, Mildred B., et al. Historic Spots in California. 3rd edition. Stanford, California: Stanford University Press, 1966. p315
• Vancouver Pinnacles: Citation Unknown
• Pinnacles National Park was Pinnacles National Monument before becoming a park in 2013. Teddy Roosevelt set it aside as a monument in 1907.

Trips:

• March 4, 2015-Day hike with meetup group up to the High Peaks and through Bear Gulch Caves
• February 21, 2013-Balconies
• February 20, 2013-Day Hike with meetup group with camping two nights at the Pinnacles
• February 19, 2013-Bear Gulch Caves
• November 22, 2020 - Arrived at Pinnacles
• November 23, 2020 - South Boundary Wilderness Trail
• November 24, 2020 - Balconies Trail
• November 25, 2020 - Bench Trail and going home
  

References:

•  WikiTravel
• NPS Site
•  Wikipedia
•  SoCal Hiker trail description
• HikeSpeak
• American SouthWest
• Modern Hiker
• GeoTripper on Rhyolite Breccia rocks at Pinnacles
•  Rhyolite-Rhyolite is an igneous, volcanic rock, of felsic (silica-rich) composition (typically > 69% SiO₂—see the TAS classification). It may have any texture from glassy to aphanitic to porphyritic. The mineral assemblage is usually quartz, sanidine and plagioclase (in a ratio > 2:1—see the QAPF diagram). Biotite and hornblende are common accessory minerals.   From Wikipedia
• Breccia-The word has its origins in the Italian language, in which it means either "loose gravel" or "stone made by cemented gravel". A breccia may have a variety of different origins, as indicated by the named types including sedimentary breccia, tectonic breccia, igneous breccia, impact breccia, and hydrothermal breccia. From Wikipedia

Pictures:

•