Bimmah Sinkhole: A Practical Guide to Oman's Natural Swimming Pool

Tucked just off the coastal road between Muscat and Sur, Bimmah Sinkhole is one of Oman's most photographed natural wonders. This deep, water-filled depression in the limestone rock looks almost unreal, with clear turquoise water that invites a refreshing dip. Locals call it Hawiyat Najm, or "falling star", a name rooted in local legend. It is an easy stop on any road trip along Oman's east coast, and a welcome break from the desert heat.

What is Bimmah Sinkhole?

Bimmah Sinkhole is a naturally formed limestone sinkhole, roughly 40 metres wide and 20 metres deep. The water inside is a mix of seawater and freshwater, giving it a striking blue-green colour. It is surrounded by a small park with paved walkways, shaded sitting areas and steps leading down to the water. The sinkhole is part of Hawiyat Najm Park, a public space maintained by the local municipality.

Getting there

The sinkhole lies about 130 kilometres southeast of Muscat, just off the main highway to Sur. It sits near the village of Dibab, in the Quriyat region. The easiest way to visit is by car; there is a car park right beside the park entrance. There is no direct public bus service, so visitors usually arrive by rental car, private driver or organised tour. The drive from Muscat takes around 90 minutes along a well-maintained coastal road.

Swimming and safety

Swimming is allowed and very popular, but there are no lifeguards on duty, so visitors swim at their own risk. The water is deep in the centre and can be cold, even in summer. Stone steps lead down from the rim to the water's edge, but they can be slippery, so take care. Water shoes are useful because the rocks are sharp in places. As this is a public place in Oman, modest swimwear is recommended; many visitors wear shorts and a t-shirt over their swimsuit.

Best time to visit

The sinkhole is open year-round, but the cooler months from October to April are the most comfortable for swimming and exploring. Try to arrive early in the morning or late in the afternoon to avoid the strongest midday sun and the largest crowds. The site is especially beautiful in the soft light just before sunset.

Facilities and tips

There are basic toilet facilities and a few shaded areas, but no shops or cafes, so bring your own water and snacks. The park is free to enter, and there is no time limit. Combine a visit with other coastal stops such as Wadi Shab or the white-sand beach at Fins, both a short drive away. Remember to take all rubbish with you to keep this natural pool clean for everyone.