The responsibility for cleaning up a derelict site typically depends on various factors, including the ownership of the property, local regulations, and environmental authorities. If the site is on public land or poses environmental hazards, local government agencies or relevant environmental departments might take responsibility for its cleanup. If the property is privately owned, the responsibility may lie with the owner or relevant authorities overseeing land-use regulations.
For up-to-date information about the specific situation near Nissim Kahlon's cave home and its cleanup, it's best to refer to local news sources, community organizations, or relevant government agencies.