Khanderi & Underiखांदेरी उंदेरी
A UNESCO-listed island fort off Thal, built by Shivaji to control the Mumbai harbour approach.
See what is open on your dateOpen in Google MapsWhereRaigad, Maharashtra
Konkan Coast
Konkan Coast
Best time to visit1 November to 15 May
Good seasonsPost-monsoon (October to November), Winter (December to February), Summer (March to May)
DifficultyEasy
Time needed4 hrs
Base and nearbyThal jetty, Alibaug
EntryBoat ₹300 return
ClosuresUsually closed 1 June to 30 September. Boat services suspended during the monsoon, the sea is too rough.
About Khanderi & Underi
Shivaji raised Khanderi in 1679 in the teeth of both the Siddis and the British, and Underi was the Siddi answer built directly opposite. Khanderi is one of the eleven Maharashtra forts inscribed by UNESCO in 2025 as the Maratha Military Landscapes of India. A working lighthouse still operates on the island.
What to see and do
- UNESCO World Heritage listed in 2025
- Working lighthouse on the island
- Underi fort facing it across the channel
- Vetal temple and old cannons
- Boat ride out from Thal jetty
Opening status, best time and closures here are estimates from usual seasons and past patterns, not live information. Confirm with the local authority before you go. Terms of use
More places in Raigad
- Korlai FortRaigad, Maharashtra · Coastal DestinationsA Portuguese fort on a headland with a working lighthouse and a creole-speaking village below.
- Elephanta CavesRaigad, Maharashtra · CavesUNESCO-listed island caves, the 6-m Trimurti Shiva is one of India's great sculptures.
- Kolaba FortRaigad, Maharashtra · Coastal DestinationsA sea fort you walk to at low tide, straight off Alibaug beach.
- Murud-JanjiraRaigad, Maharashtra · Coastal DestinationsThe island fort no one ever conquered, 22 bastions rising straight out of the Arabian Sea.
- Padmadurg (Kasa Fort)Raigad, Maharashtra · Sea FortsThe fort Shivaji built specifically to counter Janjira, and never finished.
- SarjekotRaigad, Maharashtra · FortsA small tidal outpost north of Alibaug, reachable on foot when the sea pulls back.
- Underi (Jaidurg)Raigad, Maharashtra · FortsA Siddi island fort built to stare down Khanderi, a short boat ride off Thal.
- Raigad FortRaigad, Maharashtra · FortsThe capital of Swarajya, 1,737 steps to Shivaji's coronation hall and samadhi.
All places in Raigad · All places in Maharashtra
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Jagah Pedia is a free travel guide by Santosh Pandey. Status, timings and closures are estimates from usual patterns, so confirm locally before you travel.