SLAVE ROCK
Missouri Historical Landmark

Exhibit II

A Geological Witness to History

Long before any name was given to it, the rock was shaped by water, time and weather.

Illustrated geological cross-section of layered sandstone
Sedimentary strata: soil, sandstone beds and finer layers.Illustration — not a historical photograph

Geology

Background & Estimated Age

Sandstone forms when sand grains are deposited — by rivers, shorelines or wind — then buried and cemented together over long spans of time.

Research Pending

Identification of the specific geologic formation and its age from Missouri Geological Survey maps.

Composition

Sandstone & Weathering

Sandstone is composed mainly of quartz grains bound by natural cements such as silica, calcite or iron oxides. Rain, freeze–thaw cycles and wind gradually round its edges and open joints, producing the rounded, fissured surfaces typical of exposed outcrops.

Setting

Appearance & Location

The rock stands within the Interstate 70 corridor near Mineola in Montgomery County, where it remains visible to passing travelers.

Research Pending

Measured dimensions and a verified description of the formation.

Gallery

Photographs of the Rock

The rock beside I-70 in winter
The rock beside I-70 in winter
The rock in the median of I-70, seen in autumn
The rock in the median of I-70, seen in autumn
❖Photograph Pending
Surface weathering detail — awaiting authentic, credited photograph.

Stewardship

Preserving the Rock

That the rock remains recognizable amid a modern interstate is itself part of its story. Understanding how it survived construction, and who cares for it today, is central to its preservation.

Research Pending

Records of any preservation actions, markers, or agency decisions concerning the formation.