1911 Encyclopædia Britannica, Volume 24… (1911)
“ The mean elevation is about 2500 ft.; but the plateaus of Amarkantak and Chauradadar in the east of Mandla district rise to nearly 3500 ft., and many of the peaks and some of the tablelands exceed this altitude. The hill of Khamla in Betul district is 3700 ft., which is also the general height of the Chikalda hills overlooking the Berar plain, while the Pachmarhi hills east of Betul, rising abruptly from the Nerbudda valley, culminate in Dhokgarh at an elevation of 4500 ft. ”
