An interesting area to explore.....have only been in the bit between Benidorm and Pego based at the fine Calpe overlooked by the big crag. The Penon d'Ifach is a grand walk. The descent through the tunnel with the 'glassy floor' allows for a grand wee walk in what is a protected site. We must have passed by the hill that you visited on our way out to the barranco.....these tops seem to be limestone crag bound everywhere.
Looking out from the Puig Campana there is another jagged limestone ridge out to the West which would almost certainly give a good day out.
Plenty of opportunities for walking on good trails and on ancient mule tracks through the now disused terraces. The trail back up from the end of the barranco day gave very fine walking back to the parking place.
The circumnavigation of the Serra Bernia, using the tunnel to connect both sides, is a very popular walk, overlooking the huge number of covered fruit trees in the wide valley to the south.