MACA 258051 - Replace Seasonal Housing This is a sources sought notice for an upcoming employee housing project at Mammoth Cave National Park. NPS is not requesting pricing at this time. Please see th... MACA 258051 - Replace Seasonal Housing This is a sources sought notice for an upcoming employee housing project at Mammoth Cave National Park. NPS is not requesting pricing at this time. Please see the attached document for further information on how to submit a response. Thank you for your interest in this project.