Knocknadobar is a Hewitt of 690 m in Kerry. Its closest neighbour in this register, Coomacarrea, is 10.6 km away.
Its drop of 565 m is 82% of its height: the col linking it to higher ground is only 125 m above sea level. It is one of only two register hills in the Iveragh Peninsula N region, with Coomacarrea. It shares its height of 690 m with Croaghaun. On the Hewitts height ladder it sits between Great Calva (691 m) and Croaghaun (690 m). Its nearest higher summit, Teermoyle Mountain (760 m, 9.7 km east), is a listed top not profiled here. The summit is marked by a trig point.