What has to be considers when overflying mountain ridges?

Question

Quiz SPL - Sailplane Pilot License - Operational Procedures - What has to be considers when overflying mountain ridges?

QuizVDS · Accepted Answer

Turbulences, therefore slightly increase speed

QuizVDS · Answer

Turbulences, reduce to minimum speed

QuizVDS · Answer

Do not overfly national parks

QuizVDS · Answer

Use circling birds to find thermal cells

SPL: What has to be considers when overflying mountain ridges?