Exploring & Preserving Maryland's Natural Treasures
A large iron ring hangs from a wall, set in place many decades ago. And right below, there’s a big stone step. Look closely to see a peephole near the top. Who was spying? Join geologist Sam Glasscock to find the answer on this walk near the Inner Harbor. We will share the stories of […]
Cost: $15-20
Digging holes seems like child’s play. But not when you’re the crew at Martin Marietta’s Texas Quarry. Their hole isn’t measured in feet, but rather miles: a mile long and a half mile wide, to be exact. This massive pit was the source of marble that was used to build the walkway to the Capitol […]
Cost: $3-10
A large iron ring hangs from a wall, set in place many decades ago. And right below, there’s a big stone step. Look closely to see a peephole near the top. Who was spying? Join geologist Sam Glasscock to find the answer on this walk near the Inner Harbor. We will share the stories of […]
Cost: $15-20
Astronomy Bird Watching Courses Field Expeditions Geology Hiking Lectures & Workshops Native Plants & Trees Open to the Public Weekend Long
Secure your spot now with EARLY BIRD PRICING through March 20—prices to increase $20 for each registration category on March 21. Have you heard the saying “spark bird”? It’s a popular phrase among birders that describes the one special species that caught their eye, igniting their passion for birds. What is your “spark” species? What […]
Cost: $100-220