Tour Description Baltimore’s story begins long before the first ships entered its harbor. This unique private journey explores the remarkable geology that shaped one of America’s oldest and most important cities, revealing how ancient mountains, rivers, coastlines, and bedrock influenced everything from settlement and transportation to architecture and industry. Depending on your interests, the itinerary may examine the Piedmont, Coastal Plain, the Fall Line, serpentinite, marble, building stone, stream valleys, harbor formation, and the geologic forces that created Baltimore’s distinctive landscape. Along the way, we’ll connect geology to neighborhoods, architecture, engineering, industry, and environmental change. Whether you are a geologist, hiker, educator, photographer, student, or simply curious about the natural history beneath the city, each experience is thoughtfully tailored to your interests and designed to encourage observation, discussion, and discovery.