The geographical term for a broad, flat-topped mountain is a table mountain, or mesa. These landforms are characterized by their flat upper surfaces and steep sides, resulting from erosion processes over time. Table mountains typically rise abruptly from surrounding plains or valleys, creating distinct elevations. They are often found in arid and semi-arid regions, with some notable examples including Table Mountain in South Africa and Roraima in South America. These mountains provide unique ecosystems and breathtaking views, making them popular destinations for hikers and nature enthusiasts.