If you want to go to the Seven Rila Lakes and want to have a more detailed map with you, you can use these here. The two maps are of different scales, the first showing the area from Panichishte to Rila Monastery and from Ivan Vazov hut to the region of Malyovitsa with different marked summer and winter trails.
The second map focuses on the lakes themselves, from Zeleni Preslap to Ezeren vrah peak with all the secret trails, benches, fountains and interesting places in the area.
The two maps are in English because of the many foreigners and guests of the country who want to visit the Seven Rila Lakes. There are again for them an article with directions and explanations to reach and distances.
And the maps came out as starting material for the Day Tripper series