**Explorer Challenges**

The Explorer Challenges are based on the Ordnance Survey Explorer maps. To qualify for these challenges you need to have found caches in the same number of squares of the map as the map number itself. For example the first cache placed in the Explorer series was GC37A2A Explorer 133 Challenge. That challenge is based on the OS Explorer 133 map which covers Haslemere & Petersfield, and the requirement is to find caches in 133 of the 600 squares of that map. The other challenges in the series follow a similar pattern.

There is a GSAK macro that will help you check your progress on these challenges. I've completed two of them at the moment.

Cache | Area the map covers | Current status | Squares with caches |

GC4KFEW Explorer 119 Challenge | Meon Valley, Portsmouth, Gosport & Fareham | Progressing | 85 |

GC3CW70 Explorer 120 Challenge | Chichester, South Harting & Selsey | Progressing | 119 |

GC501MB Explorer 130 Challenge | Salisbury & Stonehenge | Progressing | 10 |

GC501T6 Explorer 131 Challenge | Romsey, Andover & Test Valley | Progressing | 23 |

GC3HEC6 Explorer 132 Challenge | Winchester, New Alresford & East Meon | Progressing | 61 |

GC37A2A Explorer 133 Challenge | Haslemere & Petersfield | Found | 166 |

GC51MQ3 Explorer 134 Challenge | Crawley & Horsham | Progressing | 36 |

GC3ETP0 Explorer 145 Challenge | Guildford & Farnham | Found | 255 |

GC3GK87 Explorer 146 Challenge | Dorking, Box Hill & Reigate | Progressing | 127 |

GC5102F Explorer 156 Challenge | Chippenham & Bradford-on-Avon | Progressing | 14 |

GC45EC2 Explorer 157 Challenge | Marlborough & Savernake Forest | Progressing | 5 |

GC4R5NX Explorer 158 Challenge | Newbury & Hungerford | Progressing | 31 |

GC5GPTF Explorer 160 Challenge | Windsor, Weybridge & Bracknell | Mine | 167 |

GC3KRXX Explorer 161 Challenge | London South | Progressing | 46 |

GC51B6F Explorer 162 Challenge | Greenwich & Gravesend | Progressing | 44 |

GC4QQBE Explorer 167 Challenge | Thornbury, Dursley & Yate | Progressing | 4 |

GC5KMYB Explorer 171 Challenge | Chiltern Hills West | Progressing | 28 |

GC55BE6 Explorer 172 Challenge | Chiltern Hills East | Progressing | 29 |

GC4YE0Z Explorer 181 Challenge | Chiltern Hills North | Progressing | 11 |

Last revised: July 9, 2017.