In 2012, the State Parks initiated the "Geocache Challenge" - much like the Ultimate Outsiders, you were supposed to find the official regional cache in each of the 47 state parks. Using clues from those, you needed to find four mystery caches and then the Finale (52 total). While the "Challenge" isn't 100% supported anymore, most parks still have the official one active and those that don't, have other Geocaches to find. Just don't count on finding the mystery caches.

I don't have any details, but I've gathered together those places that look likely to be part of or associated with the new Black River State Park.
https://www.inaturalist.org/projects/black-river-water-trail-sc

https://southcarolinaparks.com/messages-from-the-director/new-parks-on-the-horizon?fbclid=IwAR0J2JPlhYmgmUxUaKusD4seXoKr09aIulbWyIII2l9iCTMLyiV-sSyct_Y

Just replace user_id with yours to see your own status.

https://jumear.github.io/stirfry/iNat_places.html?project_id=south-carolina-state-parks-ultimate-outsiders-edition&stats=observations&place_id=175825,175824,175898,175751,185214,178591,175828,175847,175846,185186,184779,185193,185242,185222,175896,175798,175352,178105,185256,175363,185244,185254,185215,185257,175797,175877,175897,175344,185274,185279,185277,185294,175350,175285,184983,175876,176067,175750,185298,185299,185167,175796,175983,175856,175743,175292,184028,176767,188701,188676,188731,188733,177960,187871,189796,191542&verifiable=all&user_id=sc_beetles

Boundaries and other details are preliminary
https://www.inaturalist.org/projects/may-forest-state-park-future

https://www.inaturalist.org/projects/ramsey-grove-state-park-future
Also see https://www.inaturalist.org/projects/hinds-canada-state-park-future
and Black River Water Trail

Created Ultimate Outsiders Scavenger Hunt 2023 project as a test to document my observations while on the hunt.

Not a State Park, but figures prominently in many Ultimate Outsiders missions.
https://www.inaturalist.org/projects/south-carolina-state-house

Are you an Ultimate iNaturalist yet? If you decide to give it a try, you can track your progress by simply replacing the user_id= in the query below with your iNaturalist username(s). Execute to see how well you're doing - displays observations per park. Save or bookmark for ongoing use.

https://jumear.github.io/stirfry/iNat_places.html?project_id=south-carolina-state-parks-ultimate-outsiders-edition&stats=observations&place_id=175825,175824,175898,175751,185214,178591,175828,175847,175846,185186,184779,185193,185242,185222,175896,175798,175352,178105,185256,175363,185244,185254,185215,185257,175797,175877,175897,175344,185274,185279,185277,185294,175350,175285,184983,175876,176067,175750,185298,185299,185167,175796,175983,175856,175743,175292,184028&verifiable=all&user_id=sc_beetles

https://youtu.be/1EmPHHh85yU
Not primarily a how to video, but more about data interpretation. Includes some details on my philosophy when creating projects/places. You'll want to set aside 1.5 hours to watch the whole thing.

See below for links to taxa filtered versions of the main project or places.

Umbrella projects (each park has it's own collection project):

Birds of South Carolina State Parks

Bugs (Insects, Spiders and related) of South Carolina State Parks

Herps (Reptiles and Amphibians) of South Carolina State Parks

Mammals of South Carolina State Parks

Plants of South Carolina State Parks

Simple collection projects (all parks rolled into one project):

Fungi of South Carolina State Parks

Dragonflies of South Carolina State Parks

Butterflies & Moths of South Carolina State Parks

Beetles of South Carolina State Parks

Trees of South Carolina State Parks