The terrain in Rajgal valley and Tirah is very difficult to negotiate. PA entered here in 2003 and now entering again. Poppy cultivation is high in this region. This area is notorious for kidnappings and illegal activities.
Rajgal valley is t is ten miles (16 km) long, four to five miles (8 km) at its widest, and has an elevation of 5,000 ft (1,500 m). After this area is secured , probably Parachinar will become more safer if the militants dont escape to it rather get circled and destroyed.
Kohat is not far away so supplies and med evac shouldnt be a problem. FC will be in full swing again along with regulars of Pakistan Army.