Complex sentence: In January 1928, a fire destroyed the pavilion, leaving behind a steelwork shell that was not rebuilt, with the cause remaining unknown and the damage, covered by insurance, amounting to thousands of pounds.
Split into simpler sentences: In January 1928, a fire destroyed the pavilion, leaving behind a steelwork shell that was not rebuilt. The cause remained unknown and the damage, covered by insurance, amounted to thousands of pounds.