Our 1500mm Slate Pyramid Water Feature is a large garden ornament with incremental sized pieces of Welsh Slate stacked to form a mountain shape. Stone Pyramids make a real statement in both modern gardens or alongside more traditional rustic styles. X Large 1500mm Pyramids are best suited to medium and large scale landscape developments. Please note, all images in the gallery are genuine customer photos of 1500mm Pyramids installed in UK gardens.

Reservoir & Pump pack available in the basket.


1 in stock


Complementary products for Stone Stack Pyramids.

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
Dimensions750 × 750 × 1500 mm

Welsh Slate


Blue, Fools Gold, Grey


35mm (water flow)


Supplied With Stabilising Base Plate


Base piece for this size will be around 700mm / 800mm wide and will decrease in size to the top which will be approx 100mm x 100mm


Garden Border, Pond Accessory, Rockery, Water Feature

FREE DELIVERY to standard UK postcodes.

Contact us to discuss: special requirements for delivery, remote postcode areas and international shipping quotes.

Delivery of Slate Pyramids is usually within 14 working days.

Ioan aims to deliver most large pieces in person, although we do use a trusted & insured courier for smaller items, certain exceptions & hard to reach locations.

Standard consumer rights apply, we should highlight that in over 7 years in business we are yet to have one single product returned.

Delivery & Returns

1. Choose the correct height pyramid and checkout online.

2. We then email photos of the exact pyramid you will receive.

3. At this point it is possible to request minor amends such as replacing stones for alternative tones or textures.

4. Upon customer approval, delivery is arranged.

Slate stack water feature pyramids are supplied with our bespoke base plates. Pyramids can be assembled using alternative methods, such as a copper pipe, but we do recommend using our custom made products for maximum stability.

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

Our 1500mm Slate Pyramid Water Feature is a premium garden ornament that makes a real statement in any large scale garden or landscape design. At 1.5m tall this XL stone pyramid is made up of varying size slabs of genuine Welsh Slate, sourced by hand from the mountainous quarries across Wales. This large garden water feature can be installed in a variety of settings, including large ponds or water gardens, and suits a broad range of styles from traditional to modern.

These small to large slate pieces are core drilled for water flow and attached together with our bespoke stainless steel base plate. Our Large Reservoir Pack is available in the basket when purchasing a 1500mm Slate Pyramid, this includes a reservoir, pump, hose and clips to complete th