When a drain is collapsed, badly deformed or has lost its alignment, excavation is often the only genuine fix. The damaged section is exposed, cut out and replaced with new pipe laid to correct fall on compacted bedding.
Modern practice keeps digs small and surgical: CCTV plus sonde locating puts the excavation exactly over the defect, instead of trenching the whole run on speculation.
Physically replaces pipe that cannot be repaired trenchlessly.
Wherever the located defect lies — yards, driveways, and (with more effort) under slabs.
A CCTV drain inspection is the standard way to confirm whether this is what's happening in your pipes: the camera shows the condition on screen, a locator pinpoints the exact position and depth, and you get a recorded report before any repair decisions are made.
A CCTV drain inspection shows exactly what's happening inside your pipes — no guesswork.