Nemrut (volcano) of Lake Van, which is near the volcano, allowed clarification of the chronology and activity of recent eruptions. The potential activity of Nemrut and the close proximity of several Turkish cities inspired recent in-depth studies. In October 2003, the first in Turkey real-time seismic network of sensors has been installed around the volcano. During the first three years of operation the network has registered 133 seismic events with a magnitude of 1.3–4.0. Eruptions of Nemrut were mainly of Plinian type. Their products are mainly alkaline and include a wide range of lavas: from basalt to rhyolite and phonolite, as well
Theydon Mount derives from the hill which it is located. Theydon Mount has been called "Theydon Paulyn", "Theydon Lessington", and "Theydon Briwes" in the past. The names from the former lords of the manor. The name Thoydon Mount has also been used. Theydon Bois, Garnon and Mount were recorded in the Domesday Book as "Taindena"/"Teidana". Hill Hall is a Grade I Listed country house. It was built in 1557-8 for Sir Thomas Smith. Theydon Mount has a church called St Michael which was completed in 1614 by Sir William Smith and is Grade I Listed. The original church was St Michael and