They also braced their fence with six iron pilings sunk in 28-inch concrete footers.
From the dailynews.com
Around Sasabe, steel cylinders have been sunk into the desert to create an imposing fence.
From the economist.com
If you erect a fence to keep them at bay, make it at least 120cm tall with a further 30cm sunk below ground.
From the thisisbristol.co.uk
If you erect a fence to keep them at bay, you'll need to make it at least 120cm tall with a further 30cm sunk below ground level and angled outwards to discourage them from burrowing underneath.