Near the entrance to Hacienda San Lucas [1] is Los Sapos Canopy Tour (tel. 504/9856-3758), a 14-stage zipline that takes adventurers across the Río Copán and ends at the southwest side of the Acropolis [2].
Links:
[1] http://www.moon.com/destinations/honduras/western-honduras/copan-ruinas/accommodations/outside-town
[2] http://www.moon.com/destinations/honduras/western-honduras/copan/the-ruins-copan/the-acropolis