When I placed the cache I parked in Gwyneth Grove and walked up Worsham Lane to gain access to the old railway track. With the current construction of the Link Road accessing the railway track from Sidley may be an issue but this should improve once the new road and adjacent greenway are opened.
You will need specialist climbing equipment, only attempt this if you know what you are doing, attempting this cache can be hazardous if care is not taken. Please be mindful of the cache and replace it as found. When I placed the cache I did it as a simple abseil from the top.
Bring your own pen!
Please replace the cache as found.