Makel Island (also spelled Makela) lies in the Solomon Islands, a sovereign nation of 900+ islands in the South Pacific, ~1,800 km northeast of Australia.
Province: Makira-Ulawa (eastern Solomons). Position: West of Guadalcanal (capital island), north of Makira (San Cristobal)—the province's main island. Part of the Ulawa/Makel group near Ulawa Island.
Small, likely uninhabited or sparsely populated. Fringing reef, tropical forest. The Solomons' eastern islands (Makira, Ulawa, Santa Ana, Santa Catalina, Rennell, Bellona) are less developed, more traditional—subsistence fishing/gardening, limited tourism, strong kastom (customary governance).
If you're planning a visit: Honiara (Guadalcanal) → domestic flight to Kirakira (Makira) or Ulawa Airport → boat charter. Not a casual day trip.