National Disaster Management Agency (BNPB) has released a map of the distribution of CO2 gas in the Dieng volcanic complex. Dieng current status was raised to ALERT (Level 3) by the geology from the date of May 29, 2011 at 20:45 pm.

In the distribution maps of CO2 gas in the Dieng volcanic complex, there is an explanation of the Dieng volcanic complex geology, the history of eruptions, including an explanation of the mapping and measurement of gas that have been done in the period 2000 to 2007 in the area surrounding volcanic and non volcanic craters along fracture and fault zones.
BNPB also has released a Disaster Prone Area Map around Crater Weigh. The area is included in the most dangerous areas within a radius of 1 km around the crater.

Dieng Plateau is well known as natural tourism area, the geology is a complex of old volcanic mountain type strato, with solfatara and fumarola field, as well as many craters (cones). The names of the crater are: Weigh, Sikidang, Upas, Sileri, Condrodimuko, Sibanteng and Telogo Continues. In 1979 recorded history, occurred in the crater Sinila eruptions that produce various types of gases, especially CO2. The high accumulation of CO2 when it caused 142 residents of the area around the eruption died a victim of a toxic gas that is invisible and colorless. The only way to avoid the danger of CO2 gas is away from the area suspected to generate the gas to find more fresh air.