Warning Unstable Cliff Edge Keep Back Sign
The signs below are suggestions only and are not included in your order. Nothing is added to your cart unless you choose it.
Every rockfall report sends coastal councils, quarry operators and cliff-top landowners looking for the same sign. Ground that looks solid at a headland lookout can drop away without warning, and the sign has to say so.
An AS 1319 warning sign using the ISO 7010 W008 drop pictogram with a crumbling-edge variant inside a black triangle, the WARNING header, and UNSTABLE CLIFF EDGE / Keep back – ground may give way in black on a yellow ground. It aligns with the signage guidance in AS 2156.2 for walking-track infrastructure, so it suits national-park contractors and track managers as well as private cliff-top properties. Portrait format from 225 × 300 mm up to 600 × 900 mm; choose aluminium for salt air.
Proudly Australian-made and finished with a protective matt laminate for glare-free readability and long outdoor life. Choose your size, material and finishing at checkout; both compliant and decorative material and size options are available. The sign is supplied on its own, with no screws, zip ties or fixings included.
Mount it on a post or fence at every track junction and viewpoint approach, set back from the edge itself so reading the sign does not put anyone on the unstable ground. Pairs well with our Warning Blue-Green Algae Do Not Enter Water Sign and Warning Ticks Active in This Area Check Yourself Sign. Made to order and dispatched within a 2–3 day turnaround.
Vinyl Sticker
Premium self-adhesive vinyl with a high-quality printed, UV-resistant finish. Suitable for both indoor and outdoor use. Peel-and-stick application onto any clean, smooth, flat surface — glass, metal, painted walls, doors, or existing signage. The most economical option in the range, with no drilling or mounting required.
Corflute
High-quality corrugated polypropylene (fluted plastic) board. Lightweight, fully weatherproof, and rust-proof — suitable for both indoor and outdoor use. Easy to fix with screws, cable ties, or star pickets. A premium, cost-effective choice that's tough enough to handle the elements while staying easy to install.
Aluminium Composite Panel (ACP)
A premium rigid panel with a solid polyethylene core bonded between two aluminium sheets. Lightweight yet strong, fully weatherproof, and won't rust, warp, or fade. Suitable for both indoor and outdoor use, with a clean, flat, professional finish — ideal for long-term, high-quality signage.
Aluminium Metal
High-quality solid sheet aluminium — the most heavy-duty option in the range. Naturally rust-proof, impact-resistant, and built to last. Suitable for both indoor and outdoor use, delivering maximum durability and a premium finish in any environment.
Vinyl Sticker — Reflective
Premium self-adhesive reflective vinyl with a high-quality UV-resistant finish. Suitable for both indoor and outdoor use. Printed on Class 1 retroreflective sheeting that lights up brightly when hit by headlights or a torch, keeping the sign clearly visible at night and in low light. Peel-and-stick application onto any clean, smooth, flat surface — no drilling or mounting required.
Corflute — Reflective
High-quality corrugated polypropylene (fluted plastic) board finished with premium reflective sheeting. Lightweight, fully weatherproof, and rust-proof — suitable for both indoor and outdoor use. The reflective surface glows brightly under headlights or torchlight for clear visibility after dark. Easy to fix with screws, cable ties, or star pickets.
Aluminium Composite Panel (ACP) — Reflective
A premium rigid panel with a solid polyethylene core bonded between two aluminium sheets, finished with Class 1 reflective sheeting. Lightweight yet strong, fully weatherproof, and won't rust, warp, or fade. Suitable for both indoor and outdoor use. The reflective face lights up brightly at night for maximum visibility — ideal for long-term, high-quality signage.
Aluminium Metal — Reflective
High-quality solid sheet aluminium with a premium reflective finish — the most heavy-duty option in the range. Naturally rust-proof, impact-resistant, and built to last. Suitable for both indoor and outdoor use. The Class 1 retroreflective surface shines brightly under headlights or torchlight, delivering maximum durability and night-time visibility in any environment.
Discounts apply per product — buy more of the same sign to unlock each tier. They're applied automatically at checkout:
- Buy 25 or more of the same sign — 5% off
- Buy 50 or more of the same sign — 10% off
- Buy 100 or more of the same sign — 15% off
Please note: quantities are counted per individual product and cannot be combined across different signs to reach a tier.
All signs are made to order and dispatched from our Australian facility. Flat-rate shipping applies per order:
- Standard shipping — $25 (metro & most regional areas)
- Remote/express — $35
- FREE shipping on all orders over $500
Orders are typically processed within 2-3 business days. Delivery times vary by location across Australia.
The signs below are suggestions only and are not included in your order. Nothing is added to your cart unless you choose it.
Every rockfall report sends coastal councils, quarry operators and cliff-top landowners looking for the same sign. Ground that looks solid at a headland lookout can drop away without warning, and the sign has to say so.
An AS 1319 warning sign using the ISO 7010 W008 drop pictogram with a crumbling-edge variant inside a black triangle, the WARNING header, and UNSTABLE CLIFF EDGE / Keep back – ground may give way in black on a yellow ground. It aligns with the signage guidance in AS 2156.2 for walking-track infrastructure, so it suits national-park contractors and track managers as well as private cliff-top properties. Portrait format from 225 × 300 mm up to 600 × 900 mm; choose aluminium for salt air.
Proudly Australian-made and finished with a protective matt laminate for glare-free readability and long outdoor life. Choose your size, material and finishing at checkout; both compliant and decorative material and size options are available. The sign is supplied on its own, with no screws, zip ties or fixings included.
Mount it on a post or fence at every track junction and viewpoint approach, set back from the edge itself so reading the sign does not put anyone on the unstable ground. Pairs well with our Warning Blue-Green Algae Do Not Enter Water Sign and Warning Ticks Active in This Area Check Yourself Sign. Made to order and dispatched within a 2–3 day turnaround.
Vinyl Sticker
Premium self-adhesive vinyl with a high-quality printed, UV-resistant finish. Suitable for both indoor and outdoor use. Peel-and-stick application onto any clean, smooth, flat surface — glass, metal, painted walls, doors, or existing signage. The most economical option in the range, with no drilling or mounting required.
Corflute
High-quality corrugated polypropylene (fluted plastic) board. Lightweight, fully weatherproof, and rust-proof — suitable for both indoor and outdoor use. Easy to fix with screws, cable ties, or star pickets. A premium, cost-effective choice that's tough enough to handle the elements while staying easy to install.
Aluminium Composite Panel (ACP)
A premium rigid panel with a solid polyethylene core bonded between two aluminium sheets. Lightweight yet strong, fully weatherproof, and won't rust, warp, or fade. Suitable for both indoor and outdoor use, with a clean, flat, professional finish — ideal for long-term, high-quality signage.
Aluminium Metal
High-quality solid sheet aluminium — the most heavy-duty option in the range. Naturally rust-proof, impact-resistant, and built to last. Suitable for both indoor and outdoor use, delivering maximum durability and a premium finish in any environment.
Vinyl Sticker — Reflective
Premium self-adhesive reflective vinyl with a high-quality UV-resistant finish. Suitable for both indoor and outdoor use. Printed on Class 1 retroreflective sheeting that lights up brightly when hit by headlights or a torch, keeping the sign clearly visible at night and in low light. Peel-and-stick application onto any clean, smooth, flat surface — no drilling or mounting required.
Corflute — Reflective
High-quality corrugated polypropylene (fluted plastic) board finished with premium reflective sheeting. Lightweight, fully weatherproof, and rust-proof — suitable for both indoor and outdoor use. The reflective surface glows brightly under headlights or torchlight for clear visibility after dark. Easy to fix with screws, cable ties, or star pickets.
Aluminium Composite Panel (ACP) — Reflective
A premium rigid panel with a solid polyethylene core bonded between two aluminium sheets, finished with Class 1 reflective sheeting. Lightweight yet strong, fully weatherproof, and won't rust, warp, or fade. Suitable for both indoor and outdoor use. The reflective face lights up brightly at night for maximum visibility — ideal for long-term, high-quality signage.
Aluminium Metal — Reflective
High-quality solid sheet aluminium with a premium reflective finish — the most heavy-duty option in the range. Naturally rust-proof, impact-resistant, and built to last. Suitable for both indoor and outdoor use. The Class 1 retroreflective surface shines brightly under headlights or torchlight, delivering maximum durability and night-time visibility in any environment.
Discounts apply per product — buy more of the same sign to unlock each tier. They're applied automatically at checkout:
- Buy 25 or more of the same sign — 5% off
- Buy 50 or more of the same sign — 10% off
- Buy 100 or more of the same sign — 15% off
Please note: quantities are counted per individual product and cannot be combined across different signs to reach a tier.
All signs are made to order and dispatched from our Australian facility. Flat-rate shipping applies per order:
- Standard shipping — $25 (metro & most regional areas)
- Remote/express — $35
- FREE shipping on all orders over $500
Orders are typically processed within 2-3 business days. Delivery times vary by location across Australia.