How to cover power cord so I don't cut it when using riding mower?

[Steve5]

I've got about 20m of heavy extension lead crossing a section of the lawn that I'd like to cover so I don't catch it with the riding mower blades.  

I've looked at cable ramps and cable protectors but 20m gets expensive.

I've thought about using ceiling battons screwed together with weed map pins to hold it down.

Any other ideas?

Thanks!

[Steve5]

Hi,  Different project, same concept.  Only needed one extension cord.  Good point for buying cable and adding connectors, saves money on IP54 boxes.