The Groveside Cave is found in Limgrave, just north from Church of Elleh.

Early in the game, you can find minor dungeons that you can complete to find various items and equipment to help you through your journey. One of the locations we would recommend you to travel to is the Groveside Cave situated at West Limgrave, north of Church of Elleh and southwest of Gatefront Ruins. This cave is small in terms of exploring it, and as you move forward, you'll first encounter a pack of Wolves below, and some Cave Moss around. By the bonfire, there is a body that you can loot to find x1 Cracked Pot. Straight ahead is a dead end with two more wolves, there are two more bodies that you can pillage to find x3 Glowstone and x1 Golden Rune (1), as well as some Silver Firefly that's flying by the wall.

Next, head to the east side of the cave where you'll find a gold fog door, beyond it is a boss arena where the Beastman of Farum Azula is. You can visit the boss page for the Beastman of Farum Azula to find our guide on how to defeat it. This enemy rewards you with the Flamedrake Talisman and 1000 Runes. You've now cleared the area and you can interact with the portal mist to fast travel back to the entrance.