The Amboni Caves are the most extensive limestone caves in East Africa. They are located 8 km north of Tanga City in Tanzania off the Tanga-Mombasa road. The caves were formed about 150 million years ago during the Jurassic age. It covers an area of 234 km². According to researchers the area was under water some 20 million years ago. There are altogether ten caves but only one is used for guided tours.
The cave attracts tourist as well as students for their geography lessons. The attractions include:
Popo flight - (Popo means bat in Swahili). Many of them live in the caves. Every evening at sunset they fly out of the cave entrance.