If you're interested in large meshes, check out wirepas, though it's based on 802.15.4 rather than LoRa. I was a Product Manager for a mesh based personnel tra

If you're interested in large meshes, check out wirepas, though it's based on 802.15.4 rather than LoRa. I was a Product Manager for a mesh based personnel tracking system on construction sites. We licensed Wirepas's tech for our solution... wound up learning a lot about the nuances of meshes.