There are potentially three issues with this line:
- a major cliff fall from above, perhaps when the cliff becomes unstable after a considerable amount of rain - as we had this winter
- the water is running from the cliff under the railway, which as a result become unstable - this winter the access raod suffered from this
- the concrete platform that protects to reduce the wave erosion below the line continues to collapse
It could of course be a combination of all three, any one of which could be catastrophic failure and perhaps unlike Dawlish this combination and the length of the line is an issue?
The section between East Folkestone and Abbot’s Cliff is the most vulnerable - with later sections either in tunnel, protected by Samphire Hoe, or recently rebuilt (East of Shakespeare Cliff.) This section is about two miles I reckon. A solution in the cliff might be best long term?
The Port of Dover still remain strategic important for rail transport and future opportunites such as up to 500,000 cruise passngers per year.