Fossil Hunting at Waco Mammoth National Monument, Texas

Introduction

Waco Mammoth National Monument sits on the banks of the Bosque River in Waco, Texas, and preserves the only known nursery herd of Columbian mammoths (Mammuthus columbi) ever excavated in the United States. Beginning in 1978, when local residents Paul Barron and Eddie Bufkin found a large bone eroding from a riverbank, paleontologists from Baylor University and later from the Mayborn Museum Complex uncovered the articulated remains of multiple Columbian mammoths killed and buried in a sequence of late Pleistocene flooding events between roughly 67,000 and 51,000 years ago. The site was designated a National Monument in 2015 and is administered jointly by the National Park Service, the City of Waco, and Baylor University. All fossils remain in-situ inside a climate-controlled dig shelter; collecting is not permitted. Entry to the park is free, but viewing the dig shelter requires a paid guided tour.

This guide covers the visit format, the fossils preserved, and the geology of the late Pleistocene Bosque River that drowned and buried the herd.

Location and Directions

The monument is at 6220 Steinbeck Bend Drive in northwest Waco, about 5 miles from downtown and a short drive from Baylor University. From Interstate 35 take exit 339 (Lake Shore Drive) west and follow signs north on Steinbeck Bend Drive to the park entrance. Parking is free in a paved lot at the visitor centre. The grounds are open daily and include a quarter-mile walkway from the visitor centre to the dig shelter through a wooded riparian park.

Visit format

Entry to the park grounds, visitor centre, and walkways is free. Access to the dig shelter, where the fossils are visible in-situ, requires a paid ranger-led tour. Tours begin every 30 minutes and last about 45 minutes to one hour. As of the 2026 schedule, tour tickets are $6 for adults, $5 for seniors (62+), military with ID, and youth ages 4-17, and free for children 3 and under. Group rates apply for 20 or more. No reservation is required; tickets are sold on a first-come, first-served basis at the visitor centre. Pets are not allowed in the dig shelter or inside park buildings; only registered service animals are permitted. The dig shelter is fully enclosed and climate-controlled and is accessible for visitors with mobility limitations.

What Fossils You'll Find

The monument preserves the articulated and partially articulated remains of a herd of Columbian mammoths (Mammuthus columbi), the largest of the New World Pleistocene proboscideans and an animal substantially larger than the better-known woolly mammoth of higher latitudes. The site is unique because it is the only documented case in North America of a nursery herd: a group of adult females and their young preserved together where they died, rather than as isolated bones from disparate individuals. Excavation has uncovered remains of at least 24 mammoths at two distinct levels within the deposit. The first level, dated to about 67,000 years ago, preserved roughly 19 individuals, mostly females and juveniles; the second level, dated to about 51,000 years ago, preserved at least three individuals including the only adult male Columbian mammoth recovered from the site as of recent counts.

Associated finds include a small carnivore (described in early reports as a saber-toothed cat tooth, though identification is conservative), an American camel (Camelops), Western horses (Equus), and a juvenile giant tortoise. The visitor's main experience inside the dig shelter is the view of the articulated mammoth skeletons in the same position they came to rest in the late Pleistocene river sediments. The skeletons remain partly embedded; they are not lifted, mounted, or relocated. Interpretation focuses on the herd structure, mortality event, and what it tells us about Columbian mammoth social behaviour.

"Approximately 67,000 years ago a group of adult female Columbian mammoths surrounded their young to protect them. Yet on that long-ago day, they all died." National Park Service

Geologic History

The monument sits on a Pleistocene terrace of the Bosque River, a major tributary of the Brazos River draining the Texas Hill Country. During the late Pleistocene the river drained a landscape similar to today's, but cooler and wetter, and produced a series of flood deposits stacked in the modern bluffs above the active channel. The first mammoth assemblage at the site appears to have been buried by a single catastrophic flood event roughly 67,000 years ago, in which a herd of females and juveniles took shelter in a low spot near the river and were overwhelmed by rising water and silt. A second flood event roughly 16,000 years later (about 51,000 years ago) buried additional individuals at a shallower level in the same deposit. The detailed taphonomy supports the catastrophic interpretation: the bones are preserved articulated, not scattered, and the body postures are consistent with rapid burial.

Mammoths went extinct across most of North America roughly 11,000 years ago at the end of the Pleistocene, with surviving relict populations on Wrangel Island in the Arctic Ocean lasting another several thousand years. The Waco site preserves a window into mammoth ecology long before that extinction, when Columbian mammoth herds still roamed widely across the Texas plains.

How the site became a National Monument

Paul Barron and Eddie Bufkin discovered the first eroding bone in 1978. Baylor University and the Strecker Museum (now the Mayborn Museum Complex) began excavation that year and continued in periodic seasons over the following decades. The City of Waco established the site as a city park in 2009. President Barack Obama designated it a National Monument by presidential proclamation in 2015, recognising both the unique paleontology of the nursery herd and the public-engagement role the site had developed under city stewardship. Day-to-day management is shared between the National Park Service and the City of Waco, with continued Baylor University research access.

Collecting Rules & Regulations

Is Fossil Collecting Allowed?

No. The site is preserved in-situ. Visitors view the fossils inside the dig shelter on a ranger-led tour and do not handle or collect specimens.

Key Points:

Entry to the park grounds is free.
Tour tickets for the dig shelter: $6 adults, $5 senior/military/youth, free under 4.
Tours every 30 minutes, no reservation required.
The dig shelter is fully enclosed and climate-controlled.
All fossils remain in-situ. Collection or removal is prohibited.

Waco Mammoth National Monument Fossil Hunting Guide