Diamond Cave / Phra Nang Nai Cave

This Cave has been developed for a safe sightseeing experience. There's internal lighting and a constructed walkway through the Cave. It is a small circuit, but the concretions are quite impressive. Entry fee for foreigners is 250 THB.
Safe travels,
Mega.

Amazing place. You can reach it from the Diamond Cave Resort too if you are in Railay East (just be aware of the entrance signposted by a writing on the wall, “cave”), or easily from Railay West.
200 THB fee per person required.

The cave is relatively short but it's amazing to see all the stone-formations and the sheer size of the cave from the inside. There were bats hanging from the ceiling which was fun to look at in the dark through my camera. The wooden logs you're walking on are worn down but still totally safe. Overall happy with the experience but the price feels double of what it should be (200thb per person), but I think it goes towards conservation/maintenance so I'm fine with it

The Diamond Cave is a large grotto that is among the most famous in Railay Bay. It features the best stalagmite and stalactite rock formations and makes for a worthwhile stop on your list of things to do at Railay Beach. There are a lot of bats inside the cave. They took 200 thb for the foreign tourist.

a very nice cave with huge dripstones, but it could be a bit longer because it is quite expensive for foreigners

It's gem of a place, such a beautiful stalagmites/stalactites structures. The entire hill/rock is being erosed by the salty water of the sea from underneath. The same huge erosed rock is standing on the beautiful beach it's one of the best in the world.

One of a kind experience of these limestone caves. Enjoyed a lot. There is a shady 100 THB entry fee though. They don’t issue an actual ticket and just take the cash. Looks like locals scamming the tourists.

Nice cave full of stalagmites and stalactites. Do enjoy a stroll here as the cave is very cooling. Separate entrance fees for foreigners and local.

Great Experience! Got to see tons of bats.

This is one of the options for things to do at Railey Beach in Karabi, Thailand. They do advertise 200 THB per person (locals pay less) but today they only charged us 100 THB. I saw some people not going because they didn't want to pay. Don't make that mistake! You'll get to see some amazing stalagmites and stalactites as well as bats hanging from the ceiling and flying around. They won't bother you though.

After 60-70 meters on built-up walkways the limestone cave was
magnificent like a cathedral. National park fee, 100 THB. Without signs and information, tourists cannot find this cave. We were there alone most of the time, so my son took the opportunity to sing a boy soprano solo in the cave.

It is a magical cave! Worth to visit!

Not big but nice cave on Railey beach area. Will take you 10 mins to visit but it worth it! The road to the cave is nice itself!

Welcome. Our tattoo shop is clean. Get the tattoo design you want. We can do bamboo and machine. Our shop is in Koh Tao.

Worth paying the entrance fee. The cave is quite big and impressive, we spot 2 groups of only bats hanging from the ceiling. It was almost empty so we could see it privately.

Very beautiful cave, not big but really worth the visit and associated costs

This cave is amazing, to get to it you must talk a water taxi to railay 100 Baht each way, and the walk up the trails. To enter it is 200 Baht per person, but it is worth it! The cave is dark in most spot but lit up where it needs to be. Eerie vibes with all the bat noises. It is one to see for sure if you are in krabi!

A great discovery at Railey Beach with 100 baht paid. Though 10 minutes you will finish the walk but the fascinating cave with great nature at work give great imaginary to Atlantis, church or palace.

Entrance 100 baht by cash. It takes 10 minutes to walk-in and out. Beautiful, inside is not cold.

Small, safe, easy accessible, very beautiful.
Non - claustrophobic.
Supposed to be 200 bath pr adult and 100 bath pr child, but they seem to give discounts to happy and respectful people...
Closes at 17.30.
I give it 5 stars due to its charm & a small something to do while i the area. It is not a cave you will want to travel specifically to, but a nice visit during your stay in Railey.
Minimum time required is 15 min.