The United States has 59 National Parks. All of these parks have different beauty between each other. The oldest is Yellowstone (1872), and the newest is Pinnacles (2013). Each National Park has a 4 digit “Alpha Code.” The Alpha codes are made up of the first four letters of the park name. But if the park has more than one word, it takes the first two letters of the first two words. But there are some exceptions.
Examples:
1 word: Yosemite - yose
2 word: Petrified Forest - pefo
2+ word: Black Canyon of the Gunnison - blca
Exception: Carlsbad Caverns - cave
I will hide a geocache to honor all of these parks. I will do 6 groups of 10 caches (Actually 5 groups of 10, and 1 group of 9). Each of these are a puzzle with 6 questions.
I used Wikipedia for this information, as it gives it all on one page. Also say in your log if you have been to this park. If you have, please post pictures. I visited Everglades NP in November 2016.
The final container is at: N 37° 59.ABC W 122° 09.DEF
A. The first idea to use the land for agriculture/residential use came in 18A2
B. The Shark Valley region is home to mostly:
-Sharks 9
-Alligators 6
-Crocodile 2
C. The elevation typically ranges from 0 to C feet above elevation
D. The Florida peninsula appeared above sea level between 100,000 and 1D0,000 years ago
E. Everglades NP protects the southern 2E% of the original Everglades
F. 3F federally protected animal species live in the park
What people are saying about the nps.gov series, Round 2 (The morning they were published)*:
I love new caches on Monday nights. It had to be on a Monday morning. - RV CREW
I’m glad I retired last week. - KCSearcher
I’m going to have to cancel my lunchtime meeting. And I have to leave right after work too. - dkata
Of course they’re published now. - That one cacher who is in Europe and sees 7 new caches 5 miles from home
I should move back to the area. -Alamogul
*Not all direct quotes

You can validate your puzzle solution with certitude.