Apparently IF the erosion carried on it would affect archaeology. The crucial word is IF. Prevent it then! I'll put a couple of stones there if they want, it'll stop it instantly, and I won't charge...
Aim 6: Reduce significantly the negative impact of roads and traffic on the WHS and its attributes of OUV (Outstanding Universal Value) and increase sustainable access to the WHS:
Policy 6a – Identify and implement measures to reduce the negative impacts of roads, traffic and parking on the WHS and to improve road safety and the ease and confidence with which residents and visitors can explore the WHS
Policy 6b – Manage vehicular access to byways within the WHS to avoid damage to archaeology, improve safety and encourage exploration of the landscape on foot whilst maintaining access for emergency, operational and farm vehicles and land owners.