In the Outback. Woomera to Port Augusta, South Australia. Nightfall along the main highway about halfway between the two towns. Perhaps 500 metre's from the road, intense bright white light spreading over a large area was reflecting from the ground between some low ridges. Similar to a floodlit sporting oval but lights low and unseen.

The strange thing is why and how? Located in rugged desert countryside? So no farmland with machinery. No road, rail or wayside stop. Not a mining area. No trucks. No houses or available power. Very isolated. Not a drone, spotlight, searchlight or scrub fire. Bit of a mystery! I'm sure there is a plausible explanation.