There are many types of natural stone water features – pebble stacks, slate pyramids, spheres and boulders to name a few, but my personal favorite is Monoliths. A monolith is essentially a large and long piece stone sawn at one end to produce a flat base so it can then sit in an upright position. It is then drilled from top to bottom in order to make a passage for water to be pumped from underneath the piece to gush out at the top of the piece and cover the stone in water.
There are some variations on this with the most popular being a circle, shape or letterbox size rectangle cut from the face of the piece for water to cascade from this area.
Monoliths are usually available in Granite, Limestone and Sandstone but my favorite is always Slate. Slate works brilliantly as a water feature as the water running over the stone really enhances the depth of its color and character. If your in the UK and looking for a Slate Monolith I would recommend Wadsworth Design. They manufacture monoliths from Welsh green, plum and purple slate and offer an excellent service sending images to their clients for them to choose which piece they would like to order or you can even visit them to select your monolith in person.