If you look north from Ribeira Brava you can see a sharp edge on
the right side. On this edge a long stairry path leads you from
Meia Legua to Espigao.
In the middle of the path right at the edge you can find the
Cache. It will be at least "800 «dolorosos» degraus" as written in
this article from JM:
The last 25 m the terrain is 4, you have to climb.
As we do not live permanently on Madeira we can ask a friend who
lives in Canico if maintenance is needed.