War Torn Worlds have a new terrain item available for sale.
From their announcement:
We have made a new addition to our Places of Mystery line. The Altar & Standing Stones is a stone altar surrounded by five weathered standing stones. The piece is pictured with 28mm D&D Minis. It comes fully finished with a two color dry brush. It is made from solid rubber.
WTW-06100 Altar and Standing Stones MSRP $14.99