Gaztelugatxeko biotopo babestua/Biotopo Protegido de Gaztelugatxe has 12 named peaks. The highest is Kastillo at 175 m. Other notable peaks include Atalaia, Karatxa and Atxulo.
There are 12 named mountains in Gaztelugatxeko biotopo babestua/Biotopo Protegido de Gaztelugatxe. Kastillo is the highest point. The most prominent mountain is Erlepeko puntea.

The highest peak in Gaztelugatxeko biotopo babestua/Biotopo Protegido de Gaztelugatxe is Kastillo, at 175 m.
Notable peaks in Gaztelugatxeko biotopo babestua/Biotopo Protegido de Gaztelugatxe include Kastillo, Atalaia, Karatxa, Atxulo and Landapea.
