Practitioners of a practical, earth-based magic centred in the Ramtops mountains, the Disc's equivalent of rural highlands. Discworld witches don't do much flashy magic; instead they rely on 'headology' (applied psychology), herbal medicine, and knowing when people need a good talking-to. The great witches of the series - Granny Weatherwax, Nanny Ogg, and Magrat Garlik (later replaced by Agnes Nitt and Tiffany Aching) - form an informal coven that protects the Ramtops from threats both mundane and supernatural.