AMC is looking to get back on the trail with Robert Duvall, who’s developing a new Western-themed series for the channel with the Donners’ Company.

Fox TV Studios is lined up to produce the untitled drama, which will center on the Pony Express. The pioneering service lasted only from 1860 to 1861 but remains a fabled part of Western lore.

Erik Jendresen (“Band of Brothers”) is attached to write the project, while Richard Donner is expected to direct. Duvall would play an as-yet undetermined character on the drama.

Duvall’s production partner, Rob Carliner, is also attached, through their Butchers Run Films shingle.

Project is still in its early phase, with a script yet to be written. But given their success with the Emmy-winning Duvall telepic “Broken Trail,” AMC scripted series/miniseries senior VP Christina Wayne said the project made sense for the channel.

“We’ve known about this project and have tracked it for a while,” Wayne said. “Clearly our interest peaked with Duvall, who we’ve had great success with. ”

The Pony Express project also extends AMC’s relationship with Jendresen, who’s also penning (with Chris McQuarrie) an updated version of the 1974 feature “The Conversation” as a series for the cabler.

Duvall, meanwhile, is starring in and directing the four-hour thriller “The Line” for America Saga Prods.