This postcard showcases the spectacular Onyx Colonnade formation within Mammoth Cave National Park, Edmonson County, Kentucky. The image captures the impressive limestone columns created where stalactites and stalagmites have joined together over thousands of years.
The cave lighting illuminates the golden travertine formations that give this area its distinctive appearance. Multiple columns of varying heights create a natural colonnade effect in this underground chamber.
Mammoth Cave was discovered around 1799 and has been attracting visitors for over two centuries. The cave system is recognized as the world's longest known cave network with over 400 miles of surveyed passages.
The park was officially established in 1941 and later designated as a UNESCO World Heritage Site in 1981. The Onyx Colonnade represents one of the most photographed formations within the cave system.
This postcard was posted in 1992 from Kentucky. It features a 19 cent fawn stamp from the Flora and Fauna series issued in 1991.
The sender describes their cave tour experience including a four-hour, four-mile underground journey with lunch in an underground dining room. They mention enjoying a country buffet dinner and the mild weather during their visit.
The message reads: "Hi! We had quite a bit of rain yesterday but today is just cloudy & very mild. We will be taking a 4 hr. 4 mi tour of the cave which includes a stop for lunch in an underground dining room. We had a delicious country buffet dinner last night - ham, roast beef, vegetables, salad bar, fruit, etc. for $7.95 maybe we'll be ready for another one tonight after our big walk. Love Butch + Penny"
Published by National Park Concessions Inc, Mammoth Cave, Kentucky. The card includes educational text explaining the geological formation process of stalactites and stalagmites.
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