That's the one. Make a loop from Tijola towards Gergal via Velafique. Leave Tijola on the ALP-405 turn right onto the ALP-502 south of Velafique, Garmin call it unpaved, it isn't. Just north of Gergal turn right onto the A-339 to Seron and then back to Tijola. Lovely mix of tight hairpins, big drops, long sweeping fast corners and mainly a good surface.
I am told that the A-349, which is very close by to the East, is very good too. Didn't find out until afterwards so didn't ride it