Rising 1,500 feet above sea level within the Karnala Bird Sanctuary, this fort is a favourite among Mumbai and Navi Mumbai residents. The beauty of the Karnala Fort trek lies not just in its final summit but in the journey through an active and thriving forest ecosystem. During monsoon season, the sanctuary erupts into a visual symphony, with mist curling through the trees, leaves slick with rain, and trails punctuated with colourful mushrooms and darting butterflies. The trail is clearly marked and maintained, making it friendly for beginners. It begins with a gentle incline that gradually becomes steeper and more rugged as you approach the peak. Along the way, trekkers are serenaded by birdsong as Karnala is home to over 200 species of birds, including the elusive Malabar whistling thrush and the striking Asian paradise flycatcher. Once at the top, you’re greeted by the iconic thumb-shaped pinnacle, also known as the Pandu’s Tower, a volcanic plug that has stood defiant for centuries. The views from here of lush valleys wrapped in monsoon clouds are breathtaking. On a clear day, one can spot Mumbai’s suburbs to the west and the Matheran hill range to the east.