Siau Island is an island located in the Sitaro Islands Regency, North Sulawesi Province, Indonesia. It serves as the administrative center of the regency and is known as one of the most active volcanic islands in the world due to the presence of Mount Karangetang, an active volcano that frequently erupts. Beyond its volcanic activity, Siau Island offers stunning natural beauty — white sandy beaches, crystal-clear waters, and scenic mountain views. The local people are known for their warmth and hospitality, with most residents working as fishermen and nutmeg farmers, earning the island the nickname “The Island of Nutmeg.” The island also holds strong cultural and historical significance, with local traditions still preserved today. Its rich natural and cultural attractions make Siau Island one of the hidden gems in northern Sulawesi, perfect for those seeking authentic and adventurous travel experiences..
Located off the coast of Siau Island, Mahoro Island offers stunning coral slopes with rich marine biodiversity and crystal-clear visibility. The underwater scenery is breathtaking, featuring healthy coral formations and colorful reef fish.
Makalehi Island is a popular site on liveaboard routes, known for its dramatic pinnacles and wall dives. The currents here can be strong, making it ideal for more adventurous and experienced divers.
On the western side of Siau Island, near Mount Karangetang, divers can explore volcanic rock walls formed by ancient lava flows. These lava walls create a unique seascape, contrasting dark volcanic rock with vibrant marine life.
