Complex sentence: He and John Chambers shod all their horses, and Cave made duplicate sets of horseshoes, possibly at Chambers' Bobmoonie Station where the explorers made their final base before pushing into the unknown.
Split into simpler sentences: He and John Chambers shod all their horses, and Cave made duplicate sets of horseshoes. It was at Chambers' Bobmoonie Station that the explorers made their final base before pushing into the unknown.