Swim through a secret keyhole to a hidden waterfall, hike a limestone canyon, and cool off in the Bimmah Sinkhole—all in one private day trip from Muscat. This is Oman’s classic wadi adventure with just the right mix of effort, culture, and turquoise water.
Swim through a secret keyhole to a hidden waterfall, hike a limestone canyon, and cool off in the Bimmah Sinkhole—all in one private day trip from Muscat. This is Oman’s classic wadi adventure with just the right mix of effort, culture, and turquoise water.
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Operated by Moon Tours Oman · Tiwi, Ash Sharqiyah South
The day begins with the coast unfurling beside the highway, the Gulf of Oman glinting to the right and rust-colored mountains shouldering the sky to the left. Two hours from Muscat, the road dips toward Tiwi and the soundscape changes—goats clatter over rock, palms whisper in a breeze that dares you to step into the canyon ahead. A short boat shuttle skims across the mouth of Wadi Shab, and suddenly the world narrows. Limestone walls rise in clean bands, sunlight ricochets off turquoise pools, and the wadi’s clear water pushes forward, inviting and unhurried.
moderate.
8–9 hours.
Comfortable hiking 6–7 km over uneven terrain with light scrambling; confident swimmers can add 100–200 m in pools.
Plan on 6 km round trip with 100 m of gentle elevation and some boulder-hopping; allow 2–3 hours including swims.
Yes. Reaching the Keyhole requires a 100–200 m swim through pools and a narrow slot; non-swimmers can enjoy earlier pools and canyon scenery.
There’s a parking area, the short boat shuttle, and basic stalls near the entrance; no facilities within the canyon—pack water and snacks.
October–April offers milder temperatures and clearer hiking conditions; summer is hot but manageable with early starts and plenty of water.
Yes for active kids comfortable on uneven terrain; swimming sections are for confident swimmers only and are optional.
Drone rules in Oman are strict and permits are required; flying in wadis and near highways is typically not permitted.
Oman’s aflaj irrigation systems—some over a thousand years old—still feed date plantations around Tiwi and are recognized by UNESCO for their engineering heritage.
Pack out all trash, avoid soaps in freshwater pools, and use mineral or reef-safe sunscreen to reduce water contamination. Stick to established paths to limit erosion on fragile limestone.
Moon Tours Oman operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




Book with Moon Tours Oman
Book directly with Moon Tours Oman for the best rates and real-time scheduling.
Reserve Now