|Exploration! The Crystal Mines!|
|Season 3, Episode 5|
|Air date||February 7, 2015|
|Romaji||Tanken! Kesshō kōzan!|
|Ending||Stay With Me|
DD3 Episode 4
DD3 Episode 6
Exploration! The Crystal Mines! (探検! 結晶鉱山! Tanken! Kesshō kōzan!) is the fifth episode of the third season of the Dog Days series. It first aired on February 7, 2015.
Shinku and Rebecca joins a scientific expedition that turns into a dangerous adventure when a cursed creature threatens the local Fairies.