In general, usage restrictions only apply to marked mountain landing sites (GLPs). The VFR AGA 3-3-1 Manual is decisive.
Use of GLP with fixed-wing aircraft: only if the landing site in the mountains is suitable according to the AGA 3-3-1 VFR Manual.
Using the GLP with a helicopter: The location of the outlanding can be chosen within a reasonable radius, which can be up to 400 m around the coordinates in the context of the local description (Federal Council decision of 7 May 1980).
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