Mount Guiting-Guiting (also known as
G2) is a mountain located at the heart of
Sibuyan Island, one of the seven islands of
Romblon Province in the
Philippines. Guiting-Guiting, in the local
Romblomanon dialect, means "jagged". Though the length and duration of the climb is relatively shorter, two days to climb up and one day to descend, this mountain is still acknowledged as the most difficult and technically challenging Philippine mountain to climb, alongside
Mount Halcon in
Mindoro and
Mount Mantalingajan in
Palawan.