The Pinnacles is a spectacular limestone rock formation located in Gunung Mulu National Park in Sarawak, Malaysia. The park is a UNESCO World Heritage Site and is home to one of the largest cave systems in the world, as well as a diverse range of flora and fauna.

The Pinnacles is a series of razor-sharp limestone peaks that rise up to over 45 meters (148 feet) from the surrounding jungle. The formation is made up of millions of years of erosion and is believed to have formed during the Jurassic period when the area was covered by a shallow sea.

Reaching the Pinnacles is a challenging and rewarding trek that takes hikers through dense rainforest, steep cliffs, and rocky terrain. The trek is approximately 5.5 kilometers (3.4 miles) each way and can take up to 8 hours to complete.

The trail is well-marked but can be physically demanding, with steep inclines and rugged terrain. Hikers will need to be in good physical condition and be prepared for a long day of trekking. The best time to visit the Pinnacles is from April to September when the weather is dry and the trail is less slippery.

Despite the challenging trek, the views from the top are breathtaking, with panoramic vistas of the surrounding jungle and the jagged peaks of the Pinnacles rising up from the forest floor. It is a truly unique and unforgettable experience and is one of the highlights of any visit to Gunung Mulu National Park.