Alejand...
I'm sorry you did not not enjoy your tour with us. We visit three different underground locations that don't connect to each other and it would take more than 12 minutes (20% of one hour) just to walk through the three underground spaces, more if the guide did any narration while underground. I think it would be difficult to spend 80% of the tour in the park (which is between the underground stops) while on a one hour tour.
None the less, we did not meet your expectations so will gladly issue a refund in full. Let us know the time and date of your tour, along with the name it was booked under; you can send that information to
[email protected] and we'll get the refund processing. Thanks for taking our tour and I am sorry your experience was not better.