[1] Discovery of small, oval-shaped stone tools in the area points to the fact that it has been mined for lead since the time of ancient Britons and during Roman occupation.

[2] The only significant flat area of the cwm is found before the river reaches maturity near Trawsgoed some 6 miles (9.7 km) further west.

In the long-term, it is hoped that the project will act as a springboard for establishment of a Cwmystwyth History Society which would produce materials relating to the area and eventually to the creation of a heritage centre to showcase the history of the village.

This translates to a narrow range of temperatures, rainfall in all seasons and low sunshine levels, particularly at upland locations such as inland Wales.

The MetOffice maintains a weather station in the village, with online climate records dating back to 1959.