<P> Weathering, erosion, light exposure, water damage, poor methods of excavation and reconstruction, introduced plants and animals, tourism, vandalism and theft have all damaged the site in some way . Two - thirds of the city has been excavated, but the remnants of the city are rapidly deteriorating . </P> <P> The concern for conservation has continually troubled archaeologists . The ancient city was included in the 1996 World Monuments Watch by the World Monuments Fund, and again in 1998 and in 2000 . In 1996 the organisation claimed that Pompeii "desperately need (ed) repair" and called for the drafting of a general plan of restoration and interpretation . The organisation supported conservation at Pompeii with funding from American Express and the Samuel H. Kress Foundation . </P> <P> Today, funding is mostly directed into conservation of the site; however, due to the expanse of Pompeii and the scale of the problems, this is inadequate in halting the slow decay of the materials . An estimated US $335 million is needed for all necessary work on Pompeii . A recent study has recommended an improved strategy for interpretation and presentation of the site as a cost - effective method of improving its conservation and preservation in the short term . </P> <P> In June 2013 UNESCO declared: If restoration and preservation works "fail to deliver substantial progress in the next two years," Pompeii could be placed on the List of World Heritage in Danger . </P>

Where is the lost city of pompeii located