Do you know that there is a way to communicate without Inte…

Do you know that there is a way to communicate without Internet, 5G... free messaging. Of course A part to the normal radio station , in the case you have for instance 27 MHz radio.?
It is based in LoRa network. You send your messages and ther travel between neighbour LoRa nodes until the destination. I want to investigate more about it.
Mesthastic . MQTT.... are the hashtags
https://mapa.meshtastic.es/?lat=41.25585083825275&lng=355.9093611073899&zoom=6