In close proximity to Bellwood lies a source of natural wonders unrivaled in this section of the state, namely, Sinking Valley with its cave, arch, sinkholes and springs. These wonders of nature are caused by a stream of water flowing through the valley that intermittently disappears into the earth and reappears at locations further down the valley.
Arch Spring in addition to these wonders is also noted for considerable historical background. As early as 1763, lead was procured from the deposits abounding in rather large quantities near the Arch. Indians and early settlers traveled to this place for lead to make bullets, the lead being smelted in a rude sort of way near the mines. A company finally decided to develop these mines and as a protection against attacks by Indians, a log fort was erected in 1778, which was mounted with two small cannon and had a regular garrison of from ten to forty men. Gen. Daniel Roberdeau was in command of this force and the fort was named, Fort Roberdeau, for him.
Considerable talk has arisen from time to time relative to placing a suitable marker on this historic spot and exploiting these natural wonders. It is also hoped that in the near future the road across the mountain from Bellwood to Skelp will be improved, thus furnishing convenient access to this place.