Anyone know what these are? They appear to be terra cotta or something like that. They are not plastic. The one on the right has what appears to be black tar on it as if it was on a tarred roof at one time maybe as some sort of vent. RednekF350 and I stumbled onto them today while searching for stones in Wharton.
Guy
Guy

especially the one - would look interesting with a candle in it
