Stone Boulder SB11 is a Portland Stone boulder core drilled and chiseled to replicate a waterfall. This starting out as a square block and after carefully chiselling down to create a cascading face, the water flows down perfectly. The creamy Cotswolds tones combine with the water flow to add a bit of peace and tranquility to any garden design.

Reservoir pack and slate chippings 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
Dimensions310 × 350 × 300 mm

Cream, White


Portland Stone


35mm (water flow)


Decorative Stone, Water Feature

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

Stunning Portland Stone Boulder SB11 is a drilled boulder with a chiseled face to replicate a waterfall descent. Delivery can be arranged with our courier, alternatively this can be collected from the workshop, strictly by appointment only. Portland Stone Monoliths of this size and shape are getting increasingly difficult to source. For alternative features in stock please check the online shop. Alternatively, get in touch for with bespoke requests via our Contact Us page.


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