Hulu, formerly known as Kroh or Keroh, is a town within Hulu Perak
district, in northern Perak,
and also the state of Kedah. The
nearest town on the
side is Betong in Yala province.
Although described as a border town, Pengkalan Hulu is 7 km from the
actual border which is located at Bukit Berapit, where the Malaysian
customs, immigration and quarantine station is located.