MBC has confirmed that work to remove all the vegetation from the SSSI rock face is planned to take place on Thursday 19^th & Friday 20^th February.

What the Downswood SSSI Is All About

The SSSI in Downswood is designated because of the old ragstone quarry—a remnant of the area’s industrial and geological past. Although the site is now surrounded by housing and green space, the quarry face preserves something genuinely special: an exposed section of Kentish Ragstone that is unusually clear, well‑stratified, and scientifically valuable.

Why the Ragstone Here Matters

Kentish Ragstone is a hard grey limestone formed in the Hythe Beds of the Lower Greensand, dating back to the Cretaceous period. It appears in alternating bands of solid ragstone and softer “hassock,” giving quarry faces their distinctive striped look.

Most former ragstone quarries in the Maidstone area have been filled, landscaped, or built over. The Downswood quarry, however, still shows:

• A clean, accessible geological face
• Excellent examples of the alternating ragstone/hassock bands
• A rare surviving exposure within a now‑urbanised landscape

This makes it valuable for geologists, students, and researchers, as it helps illustrate how the Greensand Ridge formed and why ragstone became such an important building material for Kent and London.

Historical Significance

The quarry was part of the network of ragstone workings that supplied stone for:

• Roman buildings in Kent
• Medieval churches and bridges
• Major London landmarks such as the Tower of London and Westminster Abbey (using Kentish Ragstone transported via the Medway)

Locally, the Downswood quarry—known historically as Spot Lane Quarry—was used for road‑building stone and was active until the late 1970s.

Why It Became an SSSI

Natural England designated the site because it provides:

• A textbook exposure of Lower Greensand geology
• A rare surviving example of Maidstone‑area ragstone strata
• Scientific value for understanding Kent’s geological history

In short:
It’s protected not for wildlife, but for its geology—an important window into 120‑million‑year‑old stone.