Geomorphology

Anderson Falls

Bear Creek Canyon and Portland Arch

Bluespring Caverns: a unique system of Hoosier caves

Bluffs of Beaver Bend: a scenic feature of Martin County

Squire Boon Caverns: site of historic Boone's Mill

Brown County State Park: land of scenic hills, ridges and valleys

Cataract Falls

Clifty Falls State Park

Microanalyses by electrons: the ultimate alchemist

Eyeless fish in Indiana caves

Glacial lake flatwoods

Hanging Rock: A relic of ancient seas

Harrison Spring: One of the largest in the Midwest

Hemlock Cliffs

Indiana's region of Karst topography

Kentland Dome: Geologic enigma

Klintar: Ancient marine reefs of the Wabash Valley

The Knobstone Encarpment: Scenic Hoosier landform

Lost River: Ghost stream of southern Indiana

Marengo Cave: One of Indiana's most beautiful caverns

McCormick's Creek: Indiana's first state park

Mineral waters and health resorts in Indiana

The Ohio River Story - Part I

The Ohio River Story - Part II

The Ohio River Story - Part III

The Ohio River Story - Part IV

The Ohio River Story - Part V

Oil from troubled waters?

Pine Hills Nature Preserve and the Devil's Backbone

Pokagon State Park: Ice age legacy

Sand dunes of Southern Indiana

Seven pillars of the Mississinewa: Scenic Hoosier landform

Shades State Park: A missing part of the geologic story

Spring Mill State Park

Standing rocks: Ancient erosion remnants

Turkey Run State Park: The power of erosion

Turtle Rock (Pulpit Rock, Rostrum Rock)

Versailles State Park

Williamsport Falls (Dry Falls)

Wyandotte Cave