An easy bicycle ride away, Trang An Grottoes is similar to Tam Coc, but with many more caves to pass through. Tourists who have also visited Tam Coc prefer this trip as there are not as many hawkers. Most caves have been widened in order for the boats to pass through and as result their natural beauty has been compromised. The first two caves are the most natural and beautiful, but are also tight in places, so watch your head. Lots of concrete structures are being built all over the place, and rice paddies are disappearing fast, but hopefully this area will not lose its splendor. It might be worth bringing a torch in case the power fails and the lights go out. Some of the tunnels are quite long and your rower may have forgotten his backup torch. There is a parking fee of 15,000 dong for two wheelers (bicycle or motorbike) as of June 2016. The boat trip lasts more than 2 hours so make sure you carry water and some nibbles.