Nalcor Energy's preferred route for its transmission corridor would cross Gros Morne and is drawing strong criticism. The lines connect the massive $10-billion Lower Churchill hydroelectric project in Labrador to Newfoundland.

Gros Morne is one of the province's most popular tourist destinations and is known for its fiords and stunning scenery. Each national park in Canada also contributes to the regional economy significantly. UNESCO previously removed a site in Germany from its list after construction of a four-lane bridge. Listing, and delisting decisions are based on UNESCO standards for world heritage sites.

Newfoundland Premier Danny Williams has said it might be too expensive to build the transmission line around the park, and that he is willing to risk the WHS to cut development costs. Construction of the project could start as early as 2010 if a panel of provincial and federal representatives approve the project's environmental assessment.