Entry Hall – Ancient History

WELCOME TO THE GEOLOGIC WONDERS OF RED ROCKS PARK
- Purchased by the City of Denver in 1928 for $54,133
- 728 acres
- 6435 feet above sea level
- Tallest rocks: Creation Rock and Ship Rock over 300 feet
- 45 major named sandstone rock formations, 300 million years old
3D RED ROCKS PARK MAP
You are welcome to touch the model but DO NOT climb on it. And remember, rock climbing in Red Rocks Park is very dangerous and strictly prohibited!
The current rock names in Red Rocks Park have been used for many years, but in the early days, often changed or shifted depending on the landowners at the time. The shape of Ship Rock, for example, suggests a ship going down and was renamed after the sensational sinking of the ocean liner Titanic in 1912; before that it was called Creation Rock. The names on this map are those recognized by the City of Denver at the time of the Visitor Center renovation in 2025.
NAMING THE ROCKS
Over the park’s history, its fourteen rocks have been imaginatively—and sometimes grandiosely—named and renamed. Red Rocks is full of “gateway” rocks and others that have been compared to ships or named for their different features. Cracks become crevices, then enlarge to grottos, caves and labyrinths, inspiring fanciful names like Fat Man’s Misery or Demon’s Grotto.
Early in the 1900s, J.B. Walker, the first major promoter and developer of the park, named this park Garden of the Titans, and named many features after ancient Greek gods, including Rock of Cronus, Rock of Mnemosyne, Cave of Saturn, Spring of Rhea, and Rock of Tethys.
- Lizard Head Rock: Currently Tunnel Rock, the rock you may have driven through as you approached the Visitor Center and Amphitheatre.
- Seat of Pluto, the Toadstool: The postcard suggests early photo fakery for this small, poised rock.
- Ship Rock: On the south, once known as Rock of Coios (Coeus), with a Lover’s Leap on the north edge.
- Creation Rock: North of the amphitheatre, may be the oldest name applied to this highest rock; by 1901 it was called Mammoth King Rock. Called Rock of Cronus during Titan era, its High Cave was renamed Cave of Saturn.
- Stage Rock: has been the scene of concerts since 1908.
- Rock of Tethys: Lies just east of Stage Rock; named for the Titan goddess of rivers, has no current name.
- Ladder Cave Rock: Seven Ladders Rock, Rock of the Erinyes. Named for the climbs constructed inside the rock a century ago (no longer there); many names were applied to features inside as well, e.g. Jacob’s Ladder, Toboggan Slide.
- Nine Parks Rock, Rock of Mnemosyne: This enormous rock is riddled with nine openings called parks. The rock was once named for Mnemosyne, mother of the nine muses.
- Picnic Rock: Rock of Cronus, Promontory Rock, Forbidden Climb, Caves of the Melian Nymphs, Lover’s Leap.
- Gog and Magog: The pillar rocks across the valley were likely given this biblical name in the late 1800s, when the park was known as Garden of the Angels. View from the main trail looking north. Gog, known as Sphinx from the east, is also a smokestack on the rock often known as the Sinking Titanic.
- Frog Rock is the large rock at the south end of the park.
- A smaller feature known as the Toad is just to the south.
- Sinking Titanic and Iceberg: April 1912, when the “unsinkable” ship went down, left an impression in the park.
- Park Cave Rock: Also known as Crown Rock, this is the easternmost rock in the park.
EARLIEST RESIDENTS
Apatosaurus – The Jurassic Giant
150 million years ago
Apatosaurus ajax, found by Arthur Lakes at Quarry 10 at Dinosaur Ridge in 1877, was the first specimen of the Brontosaurus clan ever discovered. At 90 feet long, it was the last and largest of the “thunder lizards.” Its long neck enabled it to browse on trees like a giraffe. Bones of this giant are on display at the Morrison Natural History Museum.
Footprints in the Sand
100 million years ago
You can see tracks of these two dinosaurs at Dinosaur Ridge, not far from Red Rocks Park. The smaller Ornithominus was 8 feet high, a quick-moving meat eater that walked on two legs. The larger lguanodon walked on four legs and ate only plants.
The Battle
70 million years ago
Tyrannosaurus rex (Left), awesome king of the carnivores, here tries to catch its prey, a herbivorous Triceratops. The giant meteorite seen falling from the sky was the catastrophic event ended the Age of the Dinosaurs.
1877 Dinosaur Discoverer
Arthur Lakes, a professor at the Colorado School of Mines, discovered dinosaur fossils in the Red Rocks area in 1877. Lakes painted watercolors like this “Digging Bones at Mt. Morrison Quarry No. 10” to document his excavations.
STELLA THE STEGOSAURUS
LENGTH: 30-33 feet
HEIGHT: 12-14 feet
WEIGHT: 3-4 tons (as much as a car)
AGE: 150 million years (the first Stegosaurus specimen was found in Morrison . . . less than a mile away!)
BRAIN SIZE: 1” diameter (size of a walnut)
DIET: Plants
“BLUSHING” PLATES: Why did their iconic bony plates turn red? Popular theories include agitation, rival intimidation, or a very showy device for regulating body temperature.
300-MILLION-YEAR-OLD STAGE SET
Once listed as one of the 7 wonders of the geologic world
Unconformity
Here, 1,700 million-year-old rocks nestle up against the much younger red rocks of the Fountain Formation, representing the disappearance of 1.2 billion years’ worth of rock. What happened to it?
Red Rocks Park
Horizontal rock layers deposited over 230 million years were tilted upby colossal geologic forces during the first mountain-building phase of today’s Rocky Mountains, beginning about 70 million years ago.
Dinosaur Ridge
Here you can see tracks of the Ornithominus and lguanodon that date back to the Jurassic period 100 million years ago.
RED ROCKS AMPHITHEATRE MODEL
Designated as both a Denver and a National Historic Landmark, this world-renowned venue was once listed as one of the seven wonders of the geologic world.
