Rocks at Puncak Hati-Hati Mananggu are rock units that are members of Bumbubulan Diorite (Tpb). This rock is in the Early Miocene to Middle Miocene age and belongs to period 2 in Gorontalo, namely the period of early magmatism-volcanism.
Figure 1. Puncak Hati-Hati Mananggu.