custom_mc_advancements/data/lore/advancements/root.json

{
    "display": {
        "icon": {
            "item": "minecraft:writable_book"
        },
        "title": "From the depths below...",
        "description": "...The Canopy rises.",
        "frame": "challenge",
        "background": "minecraft:textures/block/lime_concrete.png",
        "show_toast": false,
        "announce_to_chat": true
    },
    "criteria": {
        "be_near": {
            "trigger": "impossible"
        }
    }
}