The channel said Wednesday that Ferrell and series host Grylls spent two days in Sweden's mountains and glaciers for a "Man vs. Wild" special.
With Grylls as his guide, Ferrell rappelled down frozen waterfalls, scavenged for food in the forest — including reindeer eyeballs — and improvised snow shoes from saplings.
Ferrell said being part of "Man vs. Wild" was the "thrill of a lifetime." In turn, Grylls said he did an amazing job in unforgiving conditions.
The episode is set to air in early June, coinciding with the release of Ferrell's new comedy-adventure film "Land of the Lost."