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¤ 4033
Information Panel
- Texte français sur la photo agrandie
"The landslide of Les Diablerets
In 1714 and 1749, big masses of rocks fell down from the cliff under the summit of Les Diablerets.
About 50 millions of square meters of material covered the field, burrying 100 houses, killing several people.
Now the fallen mass is about 5 km long upon which a pioneer forest is establishing.
The mass of stones blocked the stream of the Derbonne River creating the lake of Derborence, the most recent natural lake of Switzerland."
Derborence, Switzerland
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¤ 4034
Information Panel
- Texte français sur la photo agrandie
"The lake of Derborence and its alluvial deposit
The streams from the North and from the West are depositing, especially when there are big thunderstorms, large amounts of sediment (alluvium) in the lake. They are forming deltas which go always deeper inside the lake.
In the long term, the bottom of the lake, not deep, fills in with alluvium.
In Fall, the lake can be completely empty by lack of water supply, evaporation and infiltration of the water.
One small dam was built in Fall 1976 at the exit of the lake with the aim to increase the water surface.
On the long term, the safeguard of the lake can only be secured by the excavation of the alluvium."
Derborence, Switzerland
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¤ 4035
Information Panel
- Texte français sur la photo agrandie
"The virgin forest of Derborence
The forest on the right side of the Derbonne, at the South of the lake, remained untouched because of the difficulty of access to exploit it.
It developped itself without any human influence and it is considered as the last virgin forest of Silver Fir (Abies alba) in Switzerland.
Its value is beyond any price for the scientific study of natural plants associations.
Details:
Age of the trees: 300-350 years old
Max. height of the trees: 45 meters
Largest diameter: 160 cm
Volume of one giant tree: 30 cubic meters
The Swiss League for the Nature Protection purchased an area of 50 hectares in 1959 with the aim of permanent
protection."
Derborence, Switzerland
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¤ 4031
Pinus mugo subsp. uncinata
- Old cone
Derborence, Switzerland
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¤ 4074
Pinus mugo subsp. uncinata
- Old cone (after rain)
Derborence, Switzerland
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¤ 4080
Pinus mugo subsp. uncinata
- Young cones
Derborence, Switzerland
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¤ 4075
Pinus mugo subsp. uncinata
- Candles
Derborence, Switzerland
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¤ 4054
Larix decidua
- Crown
One the right: Picea abies
Derborence, Switzerland
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¤ 4055
Larix decidua
- Tree
One the right: Picea abies
Derborence, Switzerland
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¤ 4040
Larix decidua
- Bark
Derborence, Switzerland
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