
Route 1 or the Ring Road is a national road in Iceland that runs around the island and connects most of the inhabited parts of the country. The total length of the road is 1,322 kilometres (821 mi).
Some of the most popular tourist attractions in Iceland, such as the Seljalandsfoss and Skógafoss waterfalls, Dyrhólaey and the Jökulsárlón glacier lagoon, are easily accessible from the Ring Road.
The road was completed in 1974, coinciding with the 1,100th anniversary of the country's settlement when the longest bridge in Iceland, crossing the Skeiðará river in the southeast, was opened.
(all information brazenly stolen from wikipedia, photos are my own)
This is a bonus physical cache for Adventure Lab: Ring Road.
To catch it you need:
- Android or iOS mobile phone and mobile internet access
- Adventure Lab application installed from labs.geocaching.com
- Play Adventure Lab: Ring Road and get the A-H clue values.
Enter them in the format AB-CD-EF-GH in the verifier below, for example 12-34-56-78
- All stages, including the final cache, are easily accessible by car and on foot. The higher terrain value is due to the length of the whole circuit.
The order of visiting individual stages is completely arbitrary.

You can validate your puzzle solution with certitude.