Timbertop is a Wisconsin Summer Camp for Youth with Learning Disabilities | Differences | Special Needs. Timbertop is an overnight camp designed for boys and girls that have been identified by their School District as needing extra help for a special learning need. Specific learning disabilities may include: OHI, ADHD, ADD, LD and SLD. Youth receiving support services such as Leveled Learning Intervention (LLI), Reading Support and Title 1, are also eligible.