The Ħal Saflieni Hypogeum, an underground prehistoric cemetery used from around 4000BC to 2500BC, is one of the most extraordinary archaeological sites in the world. It has been recognized by UNESCO as a site that “bears unique testimony to a civilization which has disapeared”. Scientific missions aimed at assisting the Maltese Government in preserving the site underlined the importance of maintaining climatic conditions within it stable. An environmental control system was installed in the 1990s, however, technological advances and improved understanding of the challenges faced on this site have necessitated the review and redesign of its environmental management. This will help ensure the long-term preservation and continued access to the site.


MT02/3 – A New Environmental Management System for the Ħal Saflieni Hypogeum World Heritage Site

This project, which benefits from a €748,425 grant from Iceland, Liechtenstein and Norway through the EEA Grants 2009 – 2014, seeks to ensure the stabilization of the site through the application of current technologies. Main elements of the project include:

– studies to assess the current condition of the site in terms of conservation, geology and organic residues;

– Elimination of harmful materials and residues;

– Installation of a micro-climate management system, with both passive and active control measures;

– Investigation and replacement, where necessary, of overlying connections to water mains and sewers.



For works related to the conservation project to take place, tours of the Hypogeum are currently suspended. 

We apologise for any inconvenience this may cause.



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