Complex sentence: Her remains are reputedly buried at "Bump Grave" in Moore Town, the main town of the Windward Maroons who are concentrated in and around the Rio Grande valley in the northeastern parish of Portland.
Split into simpler sentences: Her remains are reputedly buried at "Bump Grave" in Moore Town, the main town of the Windward Maroons. They are concentrated in and around the Rio Grande valley in the northeastern parish of Portland.