Bananas for Scale
Half Dome

Photo from Wikimedia Commons

Half Dome

Yosemite's iconic granite monolith with one sheer face/Mountains

Half Dome is a granite dome at the eastern end of Yosemite Valley in Yosemite National Park, California. Its distinctive shape, with a sheer northwest face rising nearly vertically about 600 meters, was created by glacial erosion that carved away the 'missing' half. The summit stands at 2,693 meters above sea level and roughly 1,444 meters above the valley floor. The first recorded ascent was by George Anderson in 1875. Today, hikers can reach the summit via a cable route installed on the back side, though permits are required and only about 300 people per day are allowed. The granite is approximately 87 million years old.

Measurements

Summit elevation2,693 m
25.4 trillionHydrogen atoms
490Parking space lengths
67.1 quadrillionthsProxima Centauri trips
Rise above valley floor1,444 m
20.6 millionHuman hairs
3.21Vatican City widths
289 billioniPhone transistors
Northwest face vertical rise600 m
1.35Empire State Buildings
20Water polo pools
6,000Pine cone lengths
Cable route length133 m
45.9Condor wingspans
40.3Hammock lengths
Granite age2.7 quadrillion s
60.9 trillionElevator rides
868 billionMicrocenturies
1.5 trillion"Be right back"s

Roughly 87 million years old

Summit area width100 m
556Carrot lengths
4.55Semi truck lengths
222Necklace lengths
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