WEB EXPLORATION OF CULTURAL HERITAGE WITH LIMITED ACCESSIBILITY: FIRST EXPERIMENTATION FOR HYPOGEUM ARCHAEOLOGICAL SITES

Abstract. The accessibility to hypogeum archaeological sites is still one of the main challenges for the dissemination of Cultural Heritage knowledge, especially in the territories rich of ancient ruins like the Mediterranean area, where modern cities often hide underground ruins of historical settlements making the accessibility of these sites very difficult or even impossible. Digital reconstructions and virtual reality applications result in many cases the only chance to explore these archaeological sites. Terrestrial laser scanning and photogrammetry are the main technologies able now to digitise at a very high-level detail the hypogeum environments, whilst web virtual navigation systems are smart solutions for their dissemination and virtual fruition. However, this approach has some critical issues since the online virtual fruition needs further 3D model elaborations and web design processes. The work aims to develop and implement a web exploration system for the web fruition of hypogeum archaeological sites. The research was carried out on two hypogeum sites in Marsala (Italy), part of the ancient Roman city of Lylibaeum. The system was developed using WebGL JavaScript open-source libraries, allowing the construction of a virtual 3D navigation platform accessible on the web. In particular, in this work, the 3D dataset elaboration necessary to solve the limitations relative to the web browsing of complex 3D datasets is investigated and a possible smart solution based on open-source technology is proposed.