After breakfast, your guide takes you first to the Stone Town harbor for the short boat crossing to Changuu Island, known locally as Prison Island, though it was never actually used as a prison. Then, in the afternoon, you drive to the island’s forested interior for your visit to Jozani Forest National Park, Zanzibar’s only national park and one of its most important conservation areas.
Prison Island (Changuu Island) Morning
The 25-minute boat ride from the Stone Town waterfront crosses a brilliant turquoise channel to Changuu Island. The island was leased to a wealthy Zanzibari Arab in the 1860s as a detention center for slaves awaiting transport, but the facility was never completed, and the building was converted to a quarantine station by the British colonial administration instead.

The island is now home to a sanctuary of Aldabra giant tortoises (Aldabrachelys gigantea), the world’s largest land tortoise, originally native to Aldabra Atoll in the Seychelles. The Zanzibar colony was established in 1919 when four tortoises were brought as a gift from the Seychelles. The current population has grown to over 100 individuals. These animals are genuinely immense; some weigh over 250 kg and grow to 1.2 metres in length. Several are believed to be over 100 years old, making them among the oldest living land animals on Earth.
You can walk freely among the tortoises, and feeding them with provided greens is one of the most surprisingly affecting wildlife encounters on the island. They approach with a slow, determined dignity that makes a strong impression. The surrounding reef also offers snorkeling (bring your own or hire equipment on the island), and the beach on the island’s eastern side is quiet and clean.
Jozani Forest National Park Afternoon
The 40-minute drive south from Stone Town takes you through the island’s agricultural heart, coconut groves, mango orchards, and the distinctive clove and nutmeg trees of the spice belt before arriving at Jozani Forest, established as a national park in 2004. The forest covers approximately 50 km² and protects the largest remaining patch of indigenous groundwater forest on Zanzibar Island.
The Kirk’s Red Colobus Monkey (Piliocolobus kirkii)
This species is what Jozani is famous for and rightly so. The Zanzibar red colobus (Piliocolobus kirkii) is classified as Endangered on the IUCN Red List and is found nowhere else in the world except this forest and a few small surrounding fragments. Current estimates suggest between 2,000 and 3,500 individuals remain. They were named after Sir John Kirk, the Scottish physician who served as British Consul in Zanzibar from 1873 to 1886 and who was the first to formally document them for Western science.

The monkeys live in multi-male, multi-female troops of 30 to 50 individuals. Your guide knows the paths these troops habitually use, which means encounters are genuinely close, typically within five to ten metres. The animals are habituated to human presence but entirely wild. You will hear them before you see them: a low, rhythmic honking call from the canopy as they move through the fig and mango trees.
The red colobus is visually distinctive, with a russet-brown crown, black back, pale underside, and an expressive white face. Infants cling to their mothers’ bellies and are pale-colored at birth, darkening over months. Adult males perform territorial displays and alarm calls with theatrical intensity. Watching them navigate 20-meter fig trees with effortless precision is one of those wildlife moments that stays with you.
The Mangrove Boardwalk
A raised boardwalk at the forest’s edge crosses a mangrove system that protects the coastline and serves as a nursery for juvenile fish. Your guide explains the ecological connections: the mangroves feed the reef, the reef supports the fishing communities, and the fishing communities have lived alongside Jozani for generations. It is a useful 20-minute addition to the visit that puts the forest in its wider context.
Other Wildlife in Jozani Forest
Beyond the colobus, Jozani Forest holds the Zanzibar leopard (extremely rare and rarely encountered), Zanzibar servaline genet, African civet, blue duiker, Sykes’ monkey (also called the Zanzibar white-throated monkey), and a remarkable bird list that includes the Zanzibar red bishop, Fischer’s turaco, and over 50 other species. Reptile enthusiasts may spot the Zanzibar day gecko and endemic chameleons.
Meals: Breakfast, Lunch & Dinner included | Overnight: Zanzibar Serena Hotel or Park Hyatt Zanzibar
Back at the hotel, the coral colors of the buildings in the last of the afternoon light make Stone Town look like a painting best appreciated from your balcony with a cold Kilimanjaro beer.