This undated photo provided by Jodie Gedeon shows David Lidstone, 81, who for nearly three decades has lived in the woods of Canterbury, N.H. along the Merrimack River in a shack, growing his own food and cutting his firewood. He's now jailed after not complying with a court order to leave, and there's a growing petition to just let "River Dave" live out his days off the grid.

This undated photo provided by Jodie Gedeon shows the shack that David Lidstone, 81, has built and lived in for nearly three decades in the woods of Canterbury, N.H., growing his own food and cutting his firewood. He's now jailed after not complying with a court order to leave, and there's a growing petition to just let "River Dave" live out his days off the grid.

This undated photo provided by Jodie Gedeon shows the shack that David Lidstone, 81, has built and lived in for nearly three decades in the woods of Canterbury, N.H.

This undated photo provided by Jodie Gedeon shows the shack that David Lidstone, 81, has built and lived in for nearly three decades in the woods of Canterbury, N.H.

In this undated photo provided by Jodie Gedeon, David Lidstone, 81, smiles in the woods of Canterbury, N.H. Lidstone has lived in the woods along the Merrimack River for nearly three decades in a shack, growing his own food and cutting his firewood. He's now jailed after not complying with a court order to leave, and there's a growing petition to just let "River Dave" live out his days off the grid.