Mua Cave is in Ninh Binh Province, 100 km from Hanoi. 2 weeks ago i took my motorbike on 1A route, straight from Hanoi, then turn right once, then keep go straight. The direction on google map is very easy to follow, just type "Hang Mua" to search. it took me over 2 hours. Or you can book a bus Hanoi- Ninh Binh on Vexere.com, the fare is 100-150.000 VND, they drive mostly on highway, safe and fast. You tell them to drop you to go "Hang Mua" (Mua Cave), in case the driver does not really understand English. some understand actually.
You can go there anytime in a day, just avoid rain time, the steps to the top maybe slider.
The weekend is not busy. And Mua Cave is very close to many attraction in Ninh Binh like Tam Coc, Bich Dong, Trang An, Thung Nai... some minutes on walking, you can enjoy all in one day. The weather is usually good there. Enjoy!!
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