In Saorge, take the D40 and park at marker 183 (see details in the ‘Practical Information’ section)
(S/E) From marker 183 (alt. 480m), cross the Caïros valley and head up through the woods towards the south-west.
(1) At the fourth hairpin bend, leave the path that goes straight ahead and continue climbing to the right until you reach marker 184.
(2) The path continues to climb before turning eastwards. Cross the seasonal stream and, after about 350m, you will reach a junction (elevation 813m). At this junction, turn right (south-west) and continue climbing via tight switchbacks.
(3) Pass a path on your right, cross a valley and head east to reach marker 180. Continue due east to marker 181 (this is located approximately 250m after passing under a high-voltage power line).
(4) At marker 181, leave the marked route and head south, then east, then north-east to the castle (visible below, 800m).
(5) Climb back up to marker 181.
(4) Descend, following roughly a north-east-facing ridge to marker 182 (elevation 723m) and then on to marker 427.
(6) The route then heads due west until you cross the stream, then north to marker 428 where you join the D40. Simply head west for 800m to return to the starting point (S/E).