AARE GORGE - Meiringen - Switzerland - 4K - Full hike from west entrance - Aareschlucht

AARE GORGE - Meiringen - Switzerland - 4K - Full hike from west entrance - Aareschlucht
I went with car to the west entrance. Did the full hike and from the east entrance you can do three things:
Get a hike outside from a walkway back
Take the train
What I did, the hike again back, the best option in my opinion.
2022 season
Aare Gorge west entrance: 2 April 2022 - 1 November 2022
Aare Gorge east entrance: 14 May 2022 - 1 November 2022
Opening hours:
02.04. - 12.06.2022 8:30 am to 5:30 pm
13.06. - 18.09.2022 8:30 am to 6:30 pm
19.09. - 01.11.2022 8:30 am to 5:30 pm
Entrance Aareschlucht
Individuals 10.00 CHF
Children under 6 years free
Children 6 - 16 years 6.50 CHF
The rock formation separating the municipalities of Meiringen and Innertkirchet is called the “Kirchet” and consists mainly of very hard limestone. This formation was created in the Cretaceous period around 130 - 160 million years ago as ocean sediment, which hardened to limestone over the years. When the alps were formed around 15 million years ago, the limestone in the area of Kirchet remained unbroken and was barely moved. Due to its (Kirchet) solidity and resistance to water and ice, the glaciers of the ice age, which began around 1 - 2 million years ago, were able to erode the cliffs, but not to carry them away.
In the first warm period, as the glaciers receded, the water eroded a gorge through the cliffs. In the following cold period, the glacier once again covered the Kirchet and filled it with moraine. During the next warm period, the melting water did not wash out the moraine, but instead cut a new gorge between the cliffs. According to Müller’s detailed observation, five more gorges exist in the Kichet (which make the total amount of gorges in the area seven), which were created during the ice age, and are partially or completely filled with moraine. The “Lautere Schlucht”, which begins at the car park at the West Entrance and runs more or less parallel to the present gorge is a good example thereof.
After going though the gorge, you will notice its environment is rather extreme, which results in the sparse vegetation. For example, parts of it are extremely dry while some other parts are extremely wet and parts of it get enough sunshine while some other parts are in the shadow all year round. Due to limited food, accessibility and living space, there is fish living in the stream and around 10 kinds of birds nesting in the trees, but no large mammals. Now, let’s see some facts and figures about the gorge.
Length: 1,400 meters
Narrowest place: 1 meter wide (Kleinen Enge)
Widest place: 40 meters wide (Grossen Runs)
Highest place: 180 meters
Highest measured water level: 5 meters
Flow time through the gorge: around 11 mins
Average water speed on the surface: 2 meters/second