BtB 2013 - Summertime Sadness

Story - The game takes place in one of The six Celtic nations: Britanny. 
It's the end of summer and Lara Croft is travelling through the Broceliande forest, also known today as Paimpont forest, in France. 
There are some rumours that say this is the resting place of Merlin, and that the Holy Grail could perhaps be hidden here. 
The whispered tales also speak of flooded tombs and a giant cave with a secret entrance that would be found in an old farmhouse. 
After some hours of exploration, Lara finds the farm ...

Secrets: 1

Note: You need to use the torch three times, after that throw it away in the water.