Wow thanks JAN for sharing. actually walk on stone those specially made for foot is also good I dont know wther in others country have or not but we do have it in Malaysia. certain stones is hard to walk some is very smooth I used to just try it ( not always ) when im at the park where u wear ur stoking or by barefoot ( but it will be very painful to those whom is not used to it ) and the stones in all sizes and shape is cold in a circle.

gtg now byeee
tc
with love
carol