Beautiful Lake, Unreadable Kanji

On a recent trip to Izumo Taisha and Matsue, Shimane Prefecture, I traveled from the former to the capital city by train on the Sanin Line (山陰本線). The line follows the western shore of Lake Shinji, 宍道湖, a beautiful lake (湖) with a most baffling name. Let us consider the first two characters, 宍道: the second, 道、extremely common, signifies road, street, path, etc. and is pronounced michi (not ji). The first, 宍, shin, is exceedingly rare, means meat, flesh, and no doubt few outside the local area have ever seen the character, let alone know its reading or meaning. So, wherefore the unusual and obscure name for this body of water? Long, long ago, when Izumo (as Shimane was once known) was ruled by Ookuninushnomikoto, the deity would go out hunting inoshishi (猪), or wild boar, with his favorite hound. The locals called the path along which the dog chased the boars 猪の道、or shishichi (ししぢ), which later became shinji. An interesting site about matters 宍道湖: https://shinjiko-shijimi.com/topics/1545