They are very difficult to find due to their seasonal requirement but the effort you put into finding these lorestones will yield equally significant rewards.
Fall Lorestone Locations
Fall Lorestone #1
Location. Once you accept the side quest from the merchant (Recipe for Trouble) in Gohart, the lorestone will marked on your quest log.
Fall Lorestone #2
Location. In Angur Farhal dungeon region, head to the place where you find Naane’s apprentice during Recipe of Disaster in Dalentarth.
Look for a big room in the southeast direction and you will find the lorestone at its lower floor.
Fall Lorestone #3
Location. Head to the Mull-Rane dungeon of Forsaken Plains. Look for a spur in the north section of the labyrinth where you can find a lorestone.
Fall Lorestone #4
Location. In the same region (Mull-Rane dungeon), head for the southernmost spur of Labyrinth this time to find a lorestone.
Fall Lorestone #5
Location. In Tywili coast (Rithen), when you enter Blackened halls, the lorestone will be in the area front of you.
Fall Lorestone #6
Location. While completing Silence Falls story mission, you will find the Lorestone in Foes’ Hearth’s northern side spur beside the entrance of Shattertier Mine.
You will have to complete Breaking the Siege first before you can get access to the eastern side of the continent.
Fall Lorestone #7
Location. In the Damalroc dungeon (Caeled Coast), look for the scales room for the House of Sorrows faction mission (the eldest). The lorestone is inside the room.
Fall Lorestone #8
Location. Enter the Mordus-Torr dungeon in Alabastra’s Shadow Pass. Look for the 3-way intersection in the dungeon where you can find the lorestone.
Fall Lorestone #9
Location. Enter the dungeon of Weconai in Twilight Pass in Alabastra. To the southern section of this dungeon is a jump-down point. The lorestone is in the square room having the jump-down.
Fall Lorestone #10
Location. In the same Weconai dungeon, you can access this lorestone if you choose to complete the side mission Ordo. You can find the lorestone near the jump-down point leading to the dungeon entrance.
Winter Lorestone Locations
Winter Lorestone #1
Location. In Cursewood, from Mel Senshir’s entrance, follow the path that leads to the Drowned Forest. You will find a lorestone before the road forks (heading to the Midden).
Winter Lorestone #2
Location. In Midden, head to Tinehil and follow the path north along the rock wall on your right. You will be able to spot the lorestone once you cross the river.
Winter Lorestone #3
Location. Kulrikon’s Drwoned Forest is the place you need to go. Head to Sioran Crypt and west to the dungeon entrance will be the lorestone on the spur.
Winter Lorestone #4
Location. Move along the west path from the Rahnil entrance in the keening in Kuriokon to find the lorestone.
Winter Lorestone #5
Location. In southern Caeled Coast, outside the entrance to the House of Pride. If you can’t defeat the entrance guard just run for the lorestone, grab it and run back outside.
Winter Lorestone #6
Location. While moving from High Fulgen to Shadow Pass, you will find a lorestone in the eastern section of Ariad Camp.
Winter Lorestone #7
Location. In Alabastra, head to Glowlode Cavern in Twilight Pass. After the entrance, follow the wall along the left to reach the lorestone.
Winter Lorestone #8
Location. In the Twilight pass, you need to go east from Ashmoor till you get to a landbridge. It will cross over a chasm and you can find the lorestone at bridge’s head.