Like the collaborative painting Djapu’ Miny’tji | Djapu’ Clan Design painted by Woŋgu Munuŋgurr and his sons in 1942, this painting is also a collaborative work depicting Bol’ŋu, the Thunderman.

The top and middle panels of this work refer to Wäṉḏawuy, the freshwater homeland for the Gupa-Djapu' clan and residence of Mäna the ancestral Shark. These sacred freshwaters are represented using the Djapu' clan's characterstic gridded patterning.

The top and bottom panels refer to Bol’ŋu, the Thunder Man, shared by the Djapu' and Gälpu clans. The image of Bol’ŋu was painted by Rerrkirrwaŋa Munuŋgurr. He is depicted holding his larrpan (spear), bent above his head in a menacing pose that is reenacted in ceremony by Djapu' dancers. Bol'ŋu's larrpan is visible in the night sky as a shooting star. It can also indicate the direction of the wind traveling over the Dhuwa' clan lands, seen against the backdrop of teaming rain caused by Bol'ŋu urinating the sacred waters to Wäṉḏawuy.

The central panel was painted by Marnyula Munuŋgurr, and shows Mäna’s djukurr (liver), represented by the icon in the center of the painting. Djukurr is a reminder of the kinship relationship of Yothu-Yindi (mother and child). The liver within the shark represents the child within the mother. Children born to Djapu' (Dhuwa moiety) women will belong to the Yirritja moiety.

At the base of the work, Ŋoŋgirrŋa Marawili has depicted Bol'ŋu as a waterspout in her mother's Country at Naypinya. This area belongs to the Gälpu clan. Beside the spout are Bol’ŋu’s ḻarrpan and baḻatj (clubs) which he throws to create thunder. Compared to the tightly gridded Djapu' clan designs, there is confusion in the field of cross hatching. This evokes the agitation and swirl of a waterspout that does not discriminate between fresh and saltwater.

– Buku-Larrŋgay Mulka Centre