david: that is a great looking cave you have there. here's my slot-car story: i was about 7 so this had to be 1960 or so. i grew up extremely poor....used shoes...used clothing....washed house windows and cars in the neighborhood to earn money for groceries...you get the picture. so getting this for Christmas was huge. it had to be the first slot car track ever designed and manufactured. was white plastic track....huge spool of round 1/8th inch OD copper tubing that you pressed into the track grooves once the track was assembled...and 2 cars which was a jag xk120 and an mg-td. the whole thing was powered up by a pair of 6 volt ray-o-vac dry cells that came with the entire setup. pair of little hand controllers....cars were about 6" long....and to a kid my age it was pure magic. i suspect my dad had to save up a few years to buy it. have you ever seen anything like that? just curious.