Complex sentence: Numerous potentially valuable archaelogical finds were unfortunately destroyed by farmers in this way; by way of some balance, sebakh digging also led to the discovery of numerous finds that might otherwise have gone undetected.
Split into simpler sentences: Numerous potentially valuable archaelogical finds were unfortunately destroyed by farmers in this way. However, it should also be noted that sebakh digging also led to the discovery of numerous finds that might otherwise have gone undetected.