
moderate
10–12 hours (full day)
Comfortable hiking 5 km on uneven terrain with light scrambling and swimming 200–400 m in calm freshwater.
Hike through a limestone canyon, swim into a hidden waterfall chamber, and cap the day with a bracing dip in the blue depths of Bimmah Sinkhole. This full-day outing from Muscat blends approachable adventure with Oman’s striking coastal geology and culture.
Dawn splits the Hajar Mountains into bands of bronze as the road leaves Muscat for the coast, trading city blocks for limestone canyons and the glitter of the Gulf of Oman. At Wadi Shab, a short boat hop ferries you across the estuary, palms fanning shade along the banks like welcoming hands. The canyon narrows. Trail rock nudges your ankles. Water murmurs beside you, never in a hurry, daring you to keep pace toward a chain of turquoise pools.

Aim to enter Wadi Shab by 8:00 a.m. to beat the heat and afternoon crowds; use canyon shade for breaks.
Slick limestone and shallow stream crossings reward sturdy soles and toe protection over flip-flops.
Heat and humidity add up on the coast—carry ample water plus salts to avoid cramps on the swim back.
You’ll swim through a narrow cleft to reach the waterfall; keep valuables in a dry bag and follow the guide’s lead, skipping it if flow is high.
Tiwi’s coast sat on old Indian Ocean trade routes; inland, aflaj irrigation channels have watered these date groves for centuries. Bimmah’s ‘falling star’ tale adds folklore to a textbook karst collapse.
Pack out all trash, skip soaps in the pools, and use reef-safe sunscreen to protect aquatic life. Avoid cliff-jumping at the sinkhole to reduce erosion and injuries.
Traction and toe protection make the boulder-hopping and wet entries more secure.
Keeps snacks and spare layers handy while protecting phone and camera during swims.
Strong coastal sun and reflective limestone require high-coverage protection.
summer specific
Enhances underwater visibility in the clear pools and at Bimmah’s brackish rim.