Stonehenge Replica

The Missouri S&T Stonehenge was built between 1983 and 1984 by a combined team of physics, civil engineering, and mining engineering students and faculty. The project was conceived by Dr. Joseph Senne, a Missouri S&T physics professor, as a way to demonstrate the precision and capacity of the university's experimental high-pressure water-jet stone-cutting program. Water-jet cutting — using ultra-high-pressure water (typically 50,000 to 90,000 PSI) to slice through stone, metal, and other dense materials — was a relatively new industrial technique at the time, and Missouri S&T's research program was among the most advanced in the United States.

The granite for the replica was donated by the Rock of Ages Corporation of Vermont, which supplied 160 tons of grey Barre granite cut from a Vermont quarry. The stones were shipped to Rolla by rail and truck, where the Missouri S&T water-jet equipment was used to cut them to half-scale dimensions matching the original Stonehenge sarsens. The largest replica stones are roughly 12 to 14 feet tall — half the height of the original England stones, which reach roughly 24 feet — and the entire monument occupies a circular footprint about 50 feet in diameter.

The construction process was a working demonstration of the water-jet technology. Engineering students operated the equipment under faculty supervision; documentary photographs and notes from the construction were preserved in the university's archives and form the basis of an ongoing campus exhibit on the project. The replica was dedicated on June 20, 1984 — the summer solstice — in a ceremony that included formal acknowledgment of the Rock of Ages donation, the involved faculty, and the student labor.

The Missouri S&T Stonehenge is not just a sculptural reproduction — it is an astronomically functional monument with several deliberate alignments built into the design. The primary alignment matches the original England Stonehenge: the heel stone aligns with the summer solstice sunrise, so that on or about June 20 each year, sunrise viewers standing at the center of the circle see the sun rise directly over the heel stone. The winter solstice sunset produces a similar but opposite alignment.

Beyond the solstice alignments, the Missouri S&T replica adds several modern astronomical features that the original Stonehenge does not have. A polar axis indicator — a small drilled hole in one of the upright stones — points directly at Polaris (the North Star) and can be used as a polar-alignment reference for amateur astronomers. A solar noon indicator marks the meridian line where the sun crosses overhead at solar noon, allowing the monument to function as a precise sundial. An analemma figure-eight curve etched into one of the stones tracks the sun's annual position variation throughout the year.

These additions reflect the engineering-school sensibility of the project: where the original Stonehenge was a ceremonial monument built with limited astronomical knowledge over generations, the Missouri S&T version was designed by physicists and engineers who deliberately built in precision astronomical functions. The result is a monument that is part replica, part working astronomical instrument, and part demonstration of late-20th-century stone-cutting capability.

The Stonehenge sits on a small grassy plot at the corner of 14th Street and Bishop Avenue on the Missouri S&T campus, roughly a 5-minute drive south of the I-44 interchange that serves Rolla. Parking is available along the surrounding campus streets and in a small visitor lot adjacent to the monument; weekday parking can be tight during the academic year but weekends and summer months typically have ample availability. The monument is open 24 hours a day, every day of the year, and is genuinely free with no admission fee and no required donation.

Best visiting times depend on what you're hoping to see. For general sightseeing and photography, late morning (10am to noon) and golden-hour late afternoon both produce strong light on the stones. For the summer solstice sunrise alignment, sunrise on or about June 20 (typically around 5:45am in central Missouri) draws a small crowd of amateur astronomers and S&T faculty who gather to observe the alignment. The winter solstice sunset draws a similar but smaller crowd. Random weekday visits during the academic year often include passing S&T students who can answer informal questions about the monument.

Allow 30 to 45 minutes for a focused visit including reading the interpretive signage, walking the full perimeter of the circle, and photographing the monument from multiple angles. Visitors with deeper interest in the astronomical features can extend the visit to an hour or more. The monument is suitable for visitors of all ages and is fully accessible — the surrounding grass is level and the stones can be approached and touched, though climbing on the monument is generally discouraged.

The Stonehenge Replica is the most distinctive Rolla attraction but pairs naturally with the rest of the town's Route 66 stops. The classic plan: arrive at the Stonehenge by 10am for late-morning photography, drive 5 minutes north to the Mule Trading Post or the Totem Pole Trading Post for Route 66 souvenirs, have a Slice of Pie lunch (or a piece of pie for dessert) downtown, and spend the afternoon at the Missouri Mining Museum on the S&T campus before continuing west on Route 66 toward Lebanon and Springfield.

For Route 66 travelers continuing west toward Springfield (110 miles west) or east toward St. James (7 miles east) and Cuba (30 miles east), Rolla is the natural overnight stop on the long Missouri Mother Road drive. Most travelers arrive in Rolla from St. Louis in the late afternoon, spend the night, and continue west the following morning. The Stonehenge fits naturally into either an arrival-evening visit or a morning-departure visit before continuing the drive.

For visitors making Missouri S&T part of a college tour or alumni visit, the Stonehenge is the most photographable campus landmark and produces strong photographs for family albums or alumni publications. The surrounding S&T campus has additional points of interest including the Missouri Mining Museum, the Curtis Laws Wilson Library, and the Hasselmann Alumni House — all within walking distance of the Stonehenge.