The Dead Sea coast. It is not sand, but balls of salt! The salinity of this sea is 300-310%, in some years up to 350%. https://t.co/cVqSp7gmFA https://video.twimg.com/ext_tw_video/1818741002502311936/pu/vid/avc1/720x1280/B6eb6cXvPTLFbOIb.mp4?tag=12
Discussion
Walking on this with open blisters on your feet is probably 100x Lego pain level