The cache is not at the listed coordinates. Solve the puzzle to locate the cache.
Lenape Park consists of over 400 acres of wetlands, ponds, rivers, creeks, meadows and forest. It comprises one of the largest undeveloped properties in the Rahway River watershed.
Many of the most noticeable features of the park today are not natural. For the most part, they were created by the Army Corps of Engineers during a massive flood control project which began in the late 1970's. Among other changes to the geography of the park, the Army Corps re-routed the Nomahegan Brook, and partly filled the pond along County Park Drive, directing its overflow through a culvert under the entryway to the park from the Boulevard and into the Rahway River. The blacktopped berms which now provide walking paths toward Echo Lake Park in the west and Black Brook Park in the east were constructed at the same time. Though these are used for walking and bicycling, their primary purpose is flood control. The Army Corps also constructed the large cement dam which crosses the Rahway River just upstream of the Boulevard during this flood control project.
Lining the banks of the Rahway River as it parallels the "straightaway" section of trail to the east of the flood control dam, are a number of large earthen mounds. They all have a characteristic horseshoe shape, hollowed out in the middle, with their entrances generally facing east. From local accounts, these seem to date from the time of the First World War. They have been explained as the remains of earthen bunkers in which ammunition and explosives were kept. These products were being manufactured by a factory adjacent to the park in Kenilworth and stored behind the thick earthen walls of the mounds for safe keeping. Hidden in the grid is a picture. You can unveil it by using the numbers on the sides of the grid to determine which squares are shaded and which are white. The numbers tell you how many shaded squares there are in the corresponding row or column. For example, 2 4 5 tells you that there are 2 shaded squares together and then at least one white square before the next block of 4 shaded squares and then later a block of 5 shaded squares.
When you are finished, use a Caesar Shift on the remaining white squares to reveal the location of the cache. You can use RuffNekk's Crypto Pages for help with Caesar Shift ciphers.
Keep the completed puzzle. You may need it to solve the Life on the Edge puzzle.
You can check your answers for this puzzle on Geochecker.com.