An excavating animal.

[derekpara]

Something has gone through a 3" drainage pipe at the base of my retaining garden wall, which is 3 ft high. It has obviously been excavating behind the wall because there is a large amount of spoil outside, and blocking, the drainage pipe. Any idea what it could be ?

If it a harmless creature hibernating for the winter I'll leave it alone, but if it is vermin ie a rat, then I will have to get rid of it somehow,

[Lonnie]

Hi derekpara, when you say its gone through the pipe, do you mean its bitten through?, I can hazard a guess, but would need a bit more info. If Ratters about, he'd be the best one on this,

[derekpara]

Hi, Lonnie. No, it has passed along the tube from the patio into the ground behind the wall. So the critter is about 3ft below the garden level and somewhere behind the brick wall. Very comfy - at least for the time being ! Thanks.

[horsestache1]

Could it be a mole?

[derekpara]

Thanks, Horsey, but I haven't seen any sign of moles in the thirty-odd years I've lived here - and it is London suburbia !