Another Hollywood icon is speaking out against Alberta’s oilsands industry.

Robert Redford is featured in an online video panning work in northern Alberta, calling the resource the ‘dirtiest oil on the planet’.

The award winning actor and director is calling on Americans to voice their opposition to the proposed Keystone Pipeline.

Redford is the latest celebrity to speak out about the oilsands, following comments from Neil Young last week.

Young compared Fort McMurray to Hiroshima, Japan, after the atomic bomb fell.

This also isn’t the first time that Redford’s spoken out against the oilsands

In November 2011, Redford published a column in the Globe and Mail where he called the project a ‘vast repository of enduring pollution’.

"Where spruce and fir and birch trees once rose and waters ran fresh and clean, tar-sands production has left a lifeless scar visible from outer space," he writes.

The Alberta government says the latest video doesn’t contain any facts.