for the sake of discussion i shall class mountains as any upland type area
Should you not rename the thread? Bit misleading innit?
Wiki definitions
Definitions of “mountain” include:[2]
Height over base of at least 2,500 m (8,202 ft);
Height over base of 1,500 m (4,921 ft).–2,500 m (8,202 ft). with a slope greater than 2 degrees
Height over base of 1,000 m (3,281 ft).–1,500 m (4,921 ft). with a slope greater than 5 degrees
Local (radius 7,000 m (22,966 ft). elevation greater than 300 m (984 ft)., or 300 m (984 ft)–1,000 m (3,281 ft). if local (radius 7,000 m (22,966 ft). elevation is greater than 300 m (984 ft).