text: From park headquarters , day trips leaving in the early morning a walk to Bukit Indah , followed by a boat ride through the rapids to Kuala Trenggan , returning to headquarters on foot ; a walk to the Tabing Hide , followed by a boat ride to the Lata Berkoh rapids , then another trek back to headquarters ; a boat ride on the Tembeling River to the Gua Telinga Bat Cave , which you enter on hands and knees until you can stand you then find yourself in a great vault inhabited by hundreds of fruit- and insect-eating bats not at all interested in attacking humans .
  
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  The bats are very friendly