Where can I go in Thailand that has the cool rock structure-island things?

You can stay on Phi Phi...........Most of southern thailand has weird and wonderful geology,being limestone klast...Phi Phi,Phang Nga Bay,Ang Thong and a million others.....there is a really weird rock formation near Lamai on Koh Samui called grandmother and grandfather rocks...reason being obvious if you visit...If you go to Phuket you can take a tour to Phang Nga Bay,which usually involves a brief longtail ride to James Bond Island,some kayaking in the sea caves,lunch with the sea gypsy village built on stilts in the bay and a bit of a hoon amongst the mangrove forest....As most Thailand buffs will tell you the movie The Beach was filmed on Phi Phi Island,although roughly 5 tonnes of garbage (not including russians)was removed from the beach before filming..Your 1st picture is Phi Phi,2nd looks like James Bond Island and the last one looks like Ang Thong national park and if it isn't thats how it looks anyway