1
The area of a regional natural park shall amount to at least 100 km2.
2
It shall include the entire territory of the communes concerned. Derogation from this principle is permitted if:
a.
a large area that is delimited naturally is being incorporated into the area of a regional nature park;
b.
the rural part of an extended agglomeration commune with urban residential character contributes to rounding off the area of a regional nature park.