The entrance to the cave with the little moonBassie & Adriaan: Het geheim van de schatkaartBassie and Adriaan find the small moon at the entrance of the cave. This location is not by the sea (as the story suggests) but on the island near the town of Teseguite. You can take a nice walk through the landscape here, it is quite quiet. The cave itself is only a few meters deep. The recordings inside the cave were made in the Netherlands, in the Municipal Cave in Valkenburg. The small moon is no longer visible and erosion has caused the rocks to crumble since 1986.