Tips
February 3, 2024
Hiking
More than 300 million years ago, acidic magma penetrated a fissure in the earth's upper crust and slowly solidified at depth to form granite porphyry. In a brown-red ground mass there are large potassium feldspars (orthoclase) and phenocrysts of quartz and biotite (mica). By removing the land surface, this rock, which was harder than its gneiss surroundings, was modeled out and, at the latest in the Ice Age, formed this ridge with individual rocks.
Source: Blackboard
•March 9, 2025
Hiking
Information:
Rock made of granite porphyry. Acidic magma intruded into a fissure in the upper crust more than 300 million years ago and solidified slowly at depth to form the dike rock granite porphyry.
•July 28, 2024
Hiking
•In the know? Log-in to add a tip for other adventurers!
Sign up for free
Nearby routes
Best routes near Grandfather's Chair
4.7
(12)
35
hikers
7.69km
02:13
190m
190m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.6
(8)
28
hikers
16.6km
04:44
380m
380m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.6
(12)
26
hikers
9.75km
02:48
230m
230m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
Details
Informations
Elevation 620 m
Weather
Powered by Foreca
Thursday 26 March
3°C
-4°C
-- %
Additional weather tips
Max wind speed: -- km/h
Most visited during
January
February
March
April
May
June
July
August
September
October
November
December