The defender can also use the rank cut-off: a rook on the rank between the attacking king and its pawn keeps the king out of the game, and the pawn cannot advance alone.
The roles are reversed here. White has the extra pawn on e5 but the white king on e2 is cut off along the third rank by the black rook on a3. The e-pawn is protected only by the rook on h5, and the black king on e7 is right next to it.