Abstract: Moss transplants of the species Hypnum cupressiforme L. ex Hedw. were used as active biomonitoring organisms. The moss samples were exposed at a Canakkale province site for 12 months for subsequent analysis of metal concentration (Cr, Cd, Pb, Fe, Ni, Mn). This field experiment was carried out to investigate the accumulation of the metals over a period of 3, 6, 9 and 12 months at 10 sample places. Results of heavy metal deposition indicated that metal concentration in the moss samples generally increased with the length of exposure and was higher at the roadside site. Heavy metal deposition was found in Canakkale province heavily polluted by Fe, Ni, Mn, Pb and Cr between the dates 12.06. 2002-17.03.2003. Consequently, oil and coal pollution is observed in Canakkale province. This pollution caused a very heavy metal deposition on moss especially on the lower grounds of the province in comparison to the higher ground. Apart from Cd, all different types of metal deposition are observed annually.