Underi (Jaidurg)उंदेरी
A Siddi island fort built to stare down Khanderi, a short boat ride off Thal.
See what is open on your dateOpen in Google MapsWhereRaigad, Maharashtra
Konkan & Raigad
Konkan & Raigad
Best time to visit1 November to 15 May
Good seasonsPost-monsoon (October to November), Winter (December to February), Summer (March to May)
DifficultyEasy
Time needed2 hrs
Base and nearbyThal, Alibaug
EntryBoat from Thal, around ₹300 shared
ClosuresUsually closed 1 June to 30 September. Boats do not run in the monsoon. The sea is too rough.
About Underi (Jaidurg)
A small island fort built by the Siddis of Janjira in 1680 to keep watch on Khanderi, which the Marathas held just across the water. The two islands spent years firing at each other. Underi is the rougher of the pair and gets far fewer visitors.
What to see and do
- Siddi-built ramparts facing Khanderi
- Rock-cut water cisterns
- Views across to Khanderi island
- Boat crossing from Thal beach
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
- Khanderi & UnderiRaigad, Maharashtra · Coastal DestinationsA UNESCO-listed island fort off Thal, built by Shivaji to control the Mumbai harbour approach.
- Kolaba FortRaigad, Maharashtra · Coastal DestinationsA sea fort you walk to at low tide, straight off Alibaug beach.
- Korlai FortRaigad, Maharashtra · Coastal DestinationsA Portuguese fort on a headland with a working lighthouse and a creole-speaking village below.
- 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.
- Elephanta CavesRaigad, Maharashtra · CavesUNESCO-listed island caves, the 6-m Trimurti Shiva is one of India's great sculptures.
- Revdanda FortRaigad, Maharashtra · FortsA Portuguese fort at the Kundalika mouth, its ruins swallowed by coconut groves.
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.