This paper presents a contingent valuation study concerning landscape impact generated by the construction of one dam (Baker 1) of the HIDROAYSEN hydropower project located in the Chilean Patagonia. A survey was used to collect information about citizens' opinion towards the hydropower project in four major cities in Chile. Specifically, a One-and-One-Half-bound (OOHB) willingness to pay eliciting format was applied to capture citizens’ WTP.