Complex sentence: Most of the hill stations of the NWFP are in the Galiyat region, which also extends into the Murree Tehsil of the Punjab province.
Split into simpler sentences: Most of the hill stations of the NWFP are in the Galiyat region. Although the Galiyat area is primarily in the NWFP, it also extends into the Murree Tehsil of the Punjab province.