Complex sentence: As well as historic via ferrata based on World War I fortification, the Dolomites are also particular renowned for their dramatic high mountain via ferrata, which often provide challenging ways to reach some of the summits in the range.
Split into simpler sentences: As well as historic via ferrata based on World War I fortifications, the Dolomites are also particularly renowned for their dramatic high mountain via ferrata. Several of these provide challenging ways to reach some of the summits in the range.