South of the Gomal the Suliman Range culminates in the famous Takht-iSuliman in the Largha Sherani country, a political dependency of Dera Ismail Khan district.
In the census of 1901 the operations were extended for the first time to the Kurram Valley and the Sherani country, trans-frontier territories containing a population of 66,628 souls, which had not been previously enumerated.
Towards the northern extremity of the range occur a group of peaks, which together form an oblong block or " massif °' amongst the neighbouring ridges known as " Kaisargarh " amongst the Sherani clansmen who occupy it; and as the " Takht-i-Suliman " (Solomon's throne), generally, on the frontier, from the fact of a celebrated shrine of that name existing near its southern abutment.
A somewhat thick and viscid form of mineral oil is met with at Khattan in the Marri country; and petroleum of excellent quality has been found in the Sherani hills and probably occurs in other portions of the Suliman Range.
The whole mountain was traversed and surveyed by the Takht-i-Suliman Survey Expedition of 1883 (see Sherani) and was found to consist of two parallel ridges running roughly north and south, the southern end of the eastern ridge culminating in a point 11,070 ft.