Jud McCranie wrote:

Our house has a buried cable that was laid by the previous owner for a
potential lamp in the yard. It is hooked to a switch in the house,
but there is nothing on the other end. Is there a way for an
electrician to find it without digging?

Whenever I've had construction work done, there is some service that
comes out ahead of time and marks the utility lines. They only mark
the public lines and not any private ones, but they certainly have the
technology and maybe, for a price, would mark private lines.