You can go up the central river on a boat and visit orangutang reserves. You can sleep on the boat, and you can contact local tour operator to arrange your ticket from Jakarta or Semarang to Pangkalanbun for visiting the orangutan and its Dayak tribe as well at the "Borneo Discovery Tours" at (http://www.borneo-discove...) email:[email protected] and telp +62 8125361221 24hrs services.
