The park is on the south-eastern edge of the Mount Warning erosion caldera. Creating features of gullies, ridges and a massif of peaks that form the eroded remnants of the Tweed shield volcano. The tallest peak at Nightcap is Mount Burrell also known as Blue Knob with an elevation of 933m above sea level. The Nightcap Range is mostly situated in the park and is a spur off the Great Dividing Range.