We visited this center late October. Went into the Visitor Center first, and enjoyed talking with the enthusiastic ranger who was full of information and stories about the area, and happy to relate them all (including how Lake Tahoe got it's name). We were glad that we got there a few days before it was to close on Oct. 31 for the season. There are interesting maps and books and other items for sale. We then wandered down the Rainbow Trail and saw the spawning Kokanee Salmon (a great educational area.) There were many dead salmon since this was late in the season (unfortunately didn't see the bears as some have said they encountered.) One of the rangers even came out of the office and was at creekside to answer any questions. The underwater viewing area is interesting. One of the "must see" attractions in South Lake Tahoe.