ACHMAD Zaeni, 66, is very familiar with the sound of dirt and coral falling from a cliff near the grave of Sheikh Syarif Ainun Naim on top of a hill at Tolop Kecil Island in the Belakang Padang subdistrict, City of Batam, Riau Islands. The cliff, which is being eaten away through abrasion, is just a meter away from the wall of the tomb of that propagator of Islam in the Riau Islands. “The land continues fall down. The last time it crumbled