I forgot to mention that our visit to the memorial was accidental. I knew the monument was far from being finished, so I had planned an alternate route to CSP. Due to the serendipitously poor weather, we had to reroute and passed right in front of the memorial. We literally passed it and only a half mile down the road decided to do a U-turn and visit.
I'm so glad we did.
The entry fee is a bit pricey, BUT! the money goes to carving the mountain. The government does NOT help with the funding; the foundation turned down a 10 million dollar offer of aid because Mr Ziolkowski (the man who began it all at the behest of Lakota elders) believed in the free enterprise system. The works advance solely on donations and people visting.
So! Go forth and visit.