From our recent research on ice Ⅰ_h (hexagonal ice), we deduce that free OH groups exist at the ice surface and that dangling OH influ-ences the interior of the proton-disordered ice. Additionally, exploiting recent research by others on water molecular clusters, we propose a new interpretation for the Raman OH stretching vibration of ice Ⅰ_h. We deconvolute the Raman OH stretching vibration of ice Ⅰ_h into four sub-bands, with each sub-band being ascribed to OH vibrations engaged in different types of hydrogen bonding.