Holon Lake is a massive lake biome in Holon which is situated between Settlement Oscar and Settlement Alfa. A few dive spots are scattered throughout the area. A total of five Delta Pokémon can be found hidden throughout the area, including those found in the cave beneath the lake.
The cave area that is accessed from the dive spots in the northern part of the lake is listed as Holon Undercave in the game. In the center of the area is an opening behind a tree which leads to an inner cove within the lake.
Walkthrough
When first exploring the area
- While exploring the lake to the north, the player should observe a rumbling from somewhere beneath the lake. The player will be unable to leave without investigating it.
- Dive in the northern part of the lake and then enter the cave entrance to the north which leads to the Holon Undercave.
- Observe the battle that appears when the player surfaces in the Holon Undercave.
- Resurface in Holon Lake and head north towards Settlement Alfa to receive another call from Professor Maple.
- Once Professor Maple finishes speaking, enter Settlement Alfa.
After completing the events in the Holon Volcano
- Return to the Holon Undercave, where the player observes Professor Pine being defeated by Professor Maple.
- Read Professor Pine's dialogue as she gives the player a Master Ball and then tells them to put a stop to Professor Maple.
- Leave the Holon Undercave and Holon Lake to return to Settlement Juliet.
Encountering Delta Snivy
- Surf around in the southeastern part of the lake to find a dive spot.
- Dive and head north to find a large boulder puzzle.
- Clear the boulder puzzle and continue swimming north to encounter Delta Snivy
Encountering Delta Turtwig
- The player finds Delta Turtwig along the eastern border of the lake, but as they approach it, Delta Turtwig disappears. The player must then chase it around the maps of all of the areas of the lake, including the cove and the Holon Undercave.
- The second place that the player finds Delta Turtwig is on an island in the northwestern part of the route. As the player approaches, it disappears again.
- Delta Turtwig's third location is in the northern underwater area, on the right side. It runs away yet again when the player gets near.
- The fourth place that Delta Turtwig appears is on an island directly north of the entrance to Settlement Oscar. It will flee again when approached by the player.
- Delta Turtwig's fifth hiding spot is on an island on the eastern side of the Holon Undercave. It will run away once more when the player gets too close.
- The final location that Delta Turtwig appears is on an island in the northern part of the cove. Delta Turtwig does not flee this time and battles the player once interaction occurs.
Encountering Delta Magby
- Inside of the Holon Undercave, another cave can be found in the southeasternmost corner of the area. When entering the cave, the player can plainly see Delta Magby, but there appears to be no visible method available to reach it.
- Instead, exit this small cave and look for a small dive spot to the right of the cave.
- Dive in this location, swim up through the cave entrance underwater, and then look below for a slightly lighter, ring-shaped patch of sedimentation surrounding the center of this small underwater area.
- Interact with any of this ring-shaped patch to surface and then surf to the center of the island to encounter Delta Magby.
Encountering Delta Dratini
- Inside of the Holon Undercave, the player finds an area to the northwest which requires using Rock Climb to reach the dive area on top of the rock.
- Diving into this area, resurfacing at the end of the cavern, and then following the new cave to the end allows the player to encounter Delta Dratini.
Encountering Delta Regice
Items
Pokémon
Pokémon
|
Location
|
Levels
|
Rate
|
|
|
81-86
|
30%
|
|
|
81-86
|
15%
|
|
|
81-86
|
10%
|
|
|
81-86
|
10%
|
|
|
81-86
|
10%
|
|
|
81-86
|
25%
|
Surfing
|
|
|
81-86
|
90%
|
|
|
81-86
|
10%
|
Fishing
|
|
|
81-86
|
70%
|
|
|
81-86
|
15%
|
|
|
81-86
|
15%
|
|
|
81-86
|
60%
|
|
|
81-86
|
20%
|
|
|
81-86
|
20%
|
|
|
81-86
|
1%
|
|
|
81-86
|
80%
|
|
|
81-86
|
9.5%
|
|
|
81-86
|
9.5%
|
Diving
|
|
|
Seaweed
|
|
81-86
|
25%
|
|
|
Seaweed
|
|
81-86
|
28%
|
|
|
Seaweed
|
|
81-86
|
11%
|
|
|
Seaweed
|
|
81-86
|
11%
|
|
|
Seaweed
|
|
76-81
|
25%
|
Special Pokémon
|
|
|
Only one
|
|
12
|
One
|
|
Cove
Pokémon
|
Location
|
Levels
|
Rate
|
|
|
81-86
|
30%
|
|
|
76-81
|
20%
|
|
|
76-81
|
10%
|
|
|
81-86
|
25%
|
|
|
71-76
|
15%
|
Surfing
|
|
|
81-86
|
65%
|
|
|
66-71
|
1%
|
|
|
81-86
|
34%
|
Fishing
|
|
|
81-86
|
70%
|
|
|
81-86
|
15%
|
|
|
81-86
|
15%
|
|
|
81-86
|
60%
|
|
|
81-86
|
20%
|
|
|
81-86
|
20%
|
|
|
81-86
|
1%
|
|
|
81-86
|
80%
|
|
|
81-86
|
9.5%
|
|
|
81-86
|
9.5%
|
Special Pokémon
|
|
|
Only one
|
|
13
|
One
|
|
Holon Undercave
Pokémon
|
Location
|
Levels
|
Rate
|
|
|
81-86
|
10%
|
|
|
81-86
|
8%
|
|
|
81-86
|
30%
|
|
|
81-86
|
10%
|
|
|
76-81
|
12%
|
|
|
81-86
|
10%
|
|
|
81-86
|
20%
|
Surfing
|
|
|
81-86
|
1%
|
|
|
81-86
|
39%
|
|
|
81-86
|
60%
|
Fishing
|
|
|
76-81
|
30%
|
|
|
76-81
|
70%
|
|
|
71-76
|
20%
|
|
|
30-35
|
20%
|
|
|
Ghost
|
60%
|
|
|
73-78
|
15%
|
|
|
76-81
|
1%
|
|
|
76-81
|
4%
|
|
|
71-76
|
40%
|
|
|
81-86
|
40%
|
Diving
|
|
|
Seaweed
|
|
81-86
|
25%
|
|
|
Seaweed
|
|
81-86
|
28%
|
|
|
Seaweed
|
|
81-86
|
11%
|
|
|
Seaweed
|
|
81-86
|
11%
|
|
|
Seaweed
|
|
76-81
|
25%
|
Special Pokémon
|
|
|
Only one
|
|
22
|
One
|
|
|
Only one
|
|
20
|
One
|
|
|
Only one
|
|
100
|
One
|
|
Trainers
Trainer
|
Pokémon
|
|
|
Muk
|
Lv.91
|
No item
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|