Walkthrough
Just like the Underground Path found earlier in the game, Underground Path 7-8 has no Wild Pokemon or Trainers found within it. Outside of a few Items that can be found, this path is nothing more than your way from Route 8 to Route 7.
Obtainable Items
Repel: Hidden Along Path (Randomly Respawns Daily)
Lure: Hidden Along Path (Randomly Respawns Daily)
Super Repel: Hidden Along Path (Randomly Respawns Daily)
Nugget: Hidden Along Path (Randomly Respawns Daily)
Pearl: Hidden Along Path (Randomly Respawns Daily)
Big Pearl: Hidden Along Path (Randomly Respawns Daily)
Fresh Water: Hidden Along Path (Randomly Respawns Daily)
Max Lure: Hidden Along Path (Randomly Respawns Daily)
Hyper Potion: Hidden Along Path (Randomly Respawns Daily)
Potion: Hidden Along Path (Randomly Respawns Daily)
Pretty Wing: Hidden Along Path (Randomly Respawns Daily)
Super Lure: Hidden Along Path (Randomly Respawns Daily)
Super Potion: Hidden Along Path (Randomly Respawns Daily)
Max Repel: Hidden Along Path (Randomly Respawns Daily)
Post Game
Walkthrough
After defeating the Elite Four and starting the Master Trainers Challenge, you will find a couple of Master Trainers in Underground Path 7-8. In total, there will be three Master Trainers to defeat.
Trainers
Ace Trainer Fred (Master Trainer): Level Level 70 Nidorina
Ace Trainer Dave (Master Trainer): Level 75 Nidorino
Hiker Jim (Master Trainer): Level 70 Onix