ScienceDesk, 
Lasers reveal prehistoric Irish monuments that may have been "pathways for the dead."
Live Science says archaeologists used lidar (light detection and ranging) to detect a cluster of rare Neolithic structures hidden in farmland.
And here's the original report from Antiquity Journal: https://www.cambridge.org/core/journals/antiquity/article/exploring-the-baltinglass-cursus-complex-routes-for-the-dead/81B05D3592918A99143EAE71B083B436
