Basalt Columns are mined from a quarry in the State of Washington. Unique coloring and patterns. Most are drilled up the bottom to accommodate a re-rod stake for stability. A few are drilled out completely for use as a fountain. They range in size from 10″ to 36″ and regular pricing from $21 to $169. We also have a sturdy plastic basin for use as a prefab pool or reservoir. The last photo shows a running display unit in our store.