Bimmah Sinkhole

Bimmah Sinkhole is one of the most photographed natural sights within easy reach of Muscat. It lies in the far east of Muscat Governorate, close to the border with Al Sharqiyah, just off the highway to Sur and a few kilometres before Tiwi. The sinkhole sits between the small coastal towns of Dibab and Bimmah, about 600 metres from the sea, and has been enclosed by the local municipality within Hawiyat Najm Park, a fenced public park with toilets.

The sinkhole itself is a roughly oval hollow in the limestone, around 50 by 70 metres across and about 20 metres deep, with a pool of clear turquoise water at the bottom. A stairway leads down from the rim to the water's edge, and many visitors swim or float in the pool. The contrast between the pale rock walls and the colour of the water is what makes it so popular with photographers.

Entry to the park is free. Do not assume a lifeguard is on duty, and remember that the water is deep away from the edge, so only confident swimmers should go out into the middle and children should be watched closely. Modest swimwear is expected, as this is a public park used by local families, so many visitors swim in a T-shirt and shorts. Bring water, sun protection and shoes with grip for the steps and wet rocks.

Allow an hour or so at the sinkhole. Weekday mornings are the quietest time, and the light reaches the water best in the middle of the day, although the heat in summer can be intense. It suits families, couples and anyone wanting an easy swim on a coastal road trip, and it makes a good break on the long drive between Muscat and Sur. Pack a towel and a dry bag for phones, and leave the area as clean as you found it.

The drive from central Muscat takes around an hour and a half along the coastal highway towards Sur. Most people combine it with Wadi Shab, which is a short drive further south near Tiwi, making a full day out of the two. Several Muscat tour operators run day trips that include both stops, which is a good option if you do not want to drive.