The area actually falls within the "Green Belt" zone and any filling and excavation should only be undertaken with the Permission granted from the Town Planning Board. However, when I recheck the record from the Board webpage, I find nothing related to the formation work.
I am very concerned on this case, because the subject area is partly within the lower Water Gathering Grounds. It is a very sensitive area and any activities within such area will result in polluting the natural environment.
Moreover, in 2008, an illegal cement crossing was spotted by several Green groups and I am particular worried that the excavation may be linked to the previous eco-vandalism.
It will be grateful that related department such as Planning Department and Lands Department can do a site inspection in order to safeguard the natural landscape and ecology.