Avalon – The Lost Kingdom explores the historical and archaeological roots of one of Britain’s most enduring legends. Rather than repeating familiar myth, this book examines how early medieval texts, landscape analysis and cultural tradition shaped the idea of Avalon as a real place within the Arthurian world.Drawing on primary sources, comparative geography and archaeological reasoning, Gaëtan Algoet reconstructs how the legend developed, why it persisted and where its origins may lie. The book connects literary evidence with physical landscapes, revealing how memory, belief and history intertwined to create the concept of a lost realm.Written for readers interested in Arthurian studies, medieval Britain and historical myth‑making, this work offers a clear, research‑driven approach to a subject often clouded by fantasy.Additional materials and research updates are available at www.GaetanAlgoet.eu.