Dali?

Eleanor is a 27 yo rising artist in her community. As a young college student her talent as a painter was easily recognized and indeed, she paid for her college with earnings from her oil paintings. Most of the projects ran to the abstract. Lately, her work has become quite “bizarre” according to her family; instead of sharp lines/boundaries, her oeuvre is currently described as smears. Coincidentally, Eleanor is now a heavy drinker and will often run into doors prior to opening them. However, her behavior is acceptable to her friends, she is granted the artists discount of eccentricity. More recently, her “running into things” has led to a series of small accidents while driving, and her insurance rates are through the roof. This last Monday, to meet a deadline, Eleanor sped to deliver a painting to a benefactor and experienced a major crash. Eleanor failed to stop at a red light and plowed into the back of a stationary car. Not wearing her seatbelt, she smashed through the front windshield. Surprisingly, Eleanor survived the accident, but was rushed to ED where a full physical found her “fit-as-a-fiddle”, but with significantly impaired vision, and the presence of papilledema. An MRI revealed a blood clot in the back of her brain. A lumbar puncture overflowed the gauge (it was over 50) and a lumboperitoneal shunt to relieve the CSF pressure was installed. Her vision recovered, but she opted to lay off driving for now. Immediately deep to which layer was the pressure relieved by the shunt that was causing Eleanor’s vision issues?

What are the meninges covering the brain?