The determination and passion to preserve sacred ground is largely influenced by the desire to revive and preserve the Ohlone cultural heritage. Natives today are engaging in extensive cultural research to bring back knowledge, narratives, beliefs, and practices of the post-contact days with the Spanish. The Spanish eradicated and stripped the Ohlones of their cultural heritage by causing the death of ninety percent of the population, and forcing cultural assimilation with military fortification and Catholic reform. After the arrival of the Americans, many land grants were contested in court. Preserving their burial sites is a way to gain acknowledgment as a cultural group.