Complex sentence: Alexander Forrest was the next European to explore the area in 1879, however the closest he got was to the junction of the Ord River and the Negri River, near the WA/NT Border, both of these rivers being named by him.
Split into simpler sentences: Alexander Forrest was the next European to explore the area in 1879. However, the closest he got was to the junction of the Ord River and the Negri River, near the WA/NT Border, both of these rivers being named by him.