The building and underground in much of Rafah is unsafe for folks to be living. Explosives, rockets, weapons laboratories, etc. are best to be avoided for civilian living purpose. It might be wise to raze the southside of Rafah so the folks can avoid mishaps.
Perhaps one of the most eco-friendly alternatives for Rafahittes is to continue to facilitate their transition to semi-nomadic tent living. Those concrete, brick and mortar deathtraps should be permanently removed. Fast set-up and break-down communal tents will allow the Rafahittes to free themselves from the old ways of conditioned consumerism.
Plus the youngsters enjoy the camping and always seeing new parts of their enclave.