The larger portion of the park, on the opposite side of the street, has several much smaller rock outcroppings, grass fields, and a small barbecue and picnic area.

They stem from either molten material from subduction (found in regions like Pinnacles national park), or volcanic activity from the slip-strike nature of the transform faults in the East Bay.

[2][3] Evidence for the Indian Rock rhyolite being from slip-strike activity comes from the site being in the path of the Mendocino Triple Junction as it migrated northward.

[5] The top of the main outcropping, Indian Rock, has views that encompass sights from downtown Oakland and the University of California, Berkeley campus to the south; central Berkeley, San Francisco Bay, and San Francisco to the west; and Marin County and Richmond, California to the northwest and north.

All seven of the original Eucalyptus trees were removed from Indian Rock Park from January 2023 and April 2024 in an effort to rid the area of the invasive species.

Even after recent renovations, several signs of the previous Ohlone occupants remain embedded in the park, including the deeply-seated mortar carvings that served the lifestyle of these individuals.