Car Wash Falls south of Deer along Big Piney Creek, is just what the name says it is - a drive-through waterfall that'll give your vehicle a thorough wash to say the least. Onyx Cave near Eureka Springs may be small, but it makes up for it in magnificent cave formations. Bayou DeView in the Dagmar Wildlife Management Area near Brinkley is the latest addition to the Arkansas Delta Paddle Trails.