Slate Boulder SB16 is a beautiful large natural stone core drilled for water flow, for use as a feature in a garden design or landscaping project.

Reservoir + Pump available in the basket.


1 in stock

Water Feature Accessories

Add a Large Reservoir Pack to complete the water feature functionality of this natural stone. Slate Chippings in hand 18kg bags are a popular accessory.

Reservoir Pack | Welsh Slate Water Features
Large Reservoir Pack

Reservoir, pump, hose, clip and flow valve regulator for completing medium and large sized water features.

Add to basket
Slate Chippings SCB1
Slate Chippings Handy Bag

18kg of small mixed sized slate chippings.

Add to basket
Dimensions530 × 500 × 150 mm

Welsh Slate


Decorative Stone, Garden Border, Rockery, Water Feature


Blue, Fools Gold, Grey


30mm (water flow)

FREE DELIVERY to standard UK postcodes, usually within 14 working days.

Contact us to discuss special requirements for delivery, remote postcode areas and international shipping quotes. Standard consumer rights apply.

Delivery & Returns

These additional products are required to complete a water feature installation: a reservoir, pump, hose & jubilee clips. All available to buy in the Basket when purchasing a stone pyramid.

Our blog contains extensive guides for how to install stone pyramids and water features, including a detailed step by step and links for the recommended additional third party products.

Stone Pyramid Install Guide

Water Feature Install Guide

Ethically sourced from a Welsh quarry, this slate boulder was chosen by hand for it’s stunning mixture of common blue-grey tones with splashes of white/cream and fools gold rusty colours. Core drilled at 30mm in the centre, the stone is transformed into a stunning water feature with the addition of our Large Reservoir Pack (available to purchase in the basket).

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