Mushroom Rock.—This peculiar landmark is situated near the village of Carneiro, Ellsworth county. It is a huge stone poised on a solitary pillar and strongly resembles the plant for which it was named. Kansas at one time was in the bed of an inland sea, and the action of the receding waters produced the grotesque shapes in stone found in different localities of the state. When the Kansas Pacific railway was being built through the state, excursion trains were frequently run as far west as the track was laid, and on one of these occasions, while building through Ellsworth county, George Francis Train, the noted lecturer, delivered a speech from the summit of Mushroom Rock to an interested group of listeners.