It is part of the Antiappennini, a group running from the Apennines chain to the Tyrrhenian Sea, where it forms the promontory of Gaeta.

It is bounded to the north-west by the Ausoni Mountains, to the north by the Liri river, to the east by the Ausente, to the south-east by the Garigliano and to the south by the Tyrrhenian sea.

The degree of faulting and cracking is so high that the mountains retain no rainfall; it sinks in to emerge as springs (and used as wells) on the lower flanks.

In the Pleistocene the basins slowly filled with sediment from the weak run-off of the mountains, accelerating with the deforestation of modern times.

With the decree of the President of the Giunta n. 253 of 11/11/2011, the members of the Table were appointed, as identified by the bodies to which they belong, and the Regulations for its functioning were approved [14].

Disputes over possible radioactive leaks In April 2014, some articles appeared on the net referring to the results of studies conducted at the beginning of the 1980s at ENEA, CNEN and SIMP (Italian Society of Mineralogy and Petrology) concerning the contamination of the Garigliano and part of the Gulf of Gaeta by radionuclides from the power plant.

[15] The articles refer to the "Proceedings of the Italo-French Convention of Radiation Protection - Florence 30 May, 1 June 1983", to the study conducted within ENEA entitled: "Influence of Geomorphological Factors on the distribution of Radionuclides - An example: from M. Circeo to Volturno "(by A. Brondi, O. Ferretti, C. Papucci) and to the" Report no.38 of the Italian Society of Mineralogy and Petrology "[16], which in turn refers to the results of the environmental research conducted at the end of the 1970s from CNEN.The plant, thanks to the EIA (Environmental Impact Assessment) obtained in 2009, has started decommissioning with Sogin (the Italian state company responsible for the dismantling of Italian nuclear plants and for the management and safety of radioactive waste) which is owner since 1999: by 2028 it is expected that the 268,150 tons of waste and 5,739 tons of radioactive waste will be adequately treated, for a total cost of 383 million euros.