Why did Moshoeshoe I choose Thaba Bosiu as his defensive center?

Moshoeshoe I chose Thaba Bosiu as his defensive center primarily because it served as a nearly impregnable natural fortress.12

The site is a sandstone plateau located in the foothills of the Maloti Mountains, rising nearly 400 feet (120 meters) above the surrounding plain. Its strategic elevation and geography provided a secure headquarters that allowed Moshoeshoe to protect his people from various threats, including Boer trekkers, the British, and other rival African groups during the turbulent period of the Difaqane.123

By establishing his base at this "Mountain at Night," Moshoeshoe was able to consolidate his power, incorporate various lineages into the Sotho nation, and maintain the autonomy of his people against external encroachment.13