Three days of river beaches, snorkeling and community visits around Alter do Chão and the Arapiuns River. Expect boat cabins, beach campfires, kayaking and visits to riverside craft communities.
More ways to explore the area's outdoor wonders
The boat eases away from Santarém at dawn and the Tapajós opens like a moving plain of light; sandbars appear and disappear as the currents play with the shoreline. On day one travelers step onto long, pale beaches at Alter do Chão, where warm, clear channels invite snorkeling and kayaks slip silently into shaded bayous.
Difficulty
moderate
Duration
3 days
Fitness Level
Light to moderate fitness; able to board small boats, walk on sandbars and paddle short distances.
Wildlife
History
Alter do Chão grew as a riverine settlement influenced by indigenous communities and later colonial river commerce; its beaches formed through seasonal sediment movement along the Tapajós.
Conservation
Tourism can stress fragile sandbars and riverbanks—follow guides, avoid single-use plastics, and use reef-safe sunscreen to minimize ecological impact.
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Protect against the sun
Bring broad-spectrum, reef-safe sunscreen and a wide-brim hat—river sand and water amplify sun exposure.
Waterproof essentials
Use a dry bag for electronics and documents; pocket knives and glass bottles are best stowed safely.
Insect defense
Carry DEET or picaridin insect repellent and a lightweight long-sleeve layer for evenings during wetter months.
Respect tides and schedules
River water levels control access; follow guides’ timing for snorkeling and beach camping to avoid sudden channel changes.
Dry bag (10–20L)
Keeps phone, documents and spare clothes dry during boat transfers and kayaking.
Reef-safe sunscreen
Protects skin while minimizing damage to aquatic life during snorkeling.
summer
Quick-dry clothing & water shoes
Comfortable on boats and sandy or rocky shorelines; protects feet and dries fast.
Insect repellent & lightweight long-sleeve
Reduces mosquito bites, especially during the wet season and at dusk.
fall