In Sarawak, two most famous caves are GUA NIAH (Niah Cave National Park) and GUA MULU (Mulu Cave National Park). Both are closer to Miri area. From Miri town area to Gua Niah only takes about 1 to 1.5 hours by the road along the seaside. If you wish to go to Gua Mulu, take flight or boat is a must to reach there. I never been to Gua Mulu before, cannot describe more here. Hope that I will have a chance to go there before I leave Miri one day.
Since staying in Miri, I have visited Gua Niah twice..
1st time, my Canon camera suddenly malfunction when husband n me reached the 1st cave.. its screen suddenly blank out, no matter what you have captured were displayed as black image.. that time my mood was really bad!! totally spoilt because of the camera.. luckily, I have another chance to go there when my mum came over Miri during end of March. :)