Can ground penetrating radar find a basement or cellar

People that own an old house have a fascination of whether they have a filled in basement or vault under the floor of the property. Obviously you could search through any old records or pictures, perhaps you could have a dig around the property on the external walls and see if this throws up a clue, like an old vent being visible. The quickest and fastest way is to use ground penetrating radar, as this method is very accurate. I normally carry out my gpr surveys to locate below ground services, hidden drainage, sub soil drainage, land drains, bodged up French drains, culverts, wells, cisterns. In this video I demonstrate what im looking at when surveying over a crypt.