GEOLOGICAL ROAD LOGUVALDE -- EAGLE PASS – ANACACHO MOUNTAINS, SOUTHWEST TEXASPrepared for the Spring, 2016 field trip by Thomas E. Ewing, Frontera Exploration ConsultantsThe April 2016 field trip was led by Tom Fett and Tom Ewing to examine the Upper Cretaceous sandstones and related rocks exposed in the Eagle Pass area. The trip originated in Castroville and traveled west, stopping at Black Waterhole to view a Cretaceous tuff ring and lava lake (as described in the 2004 guidebook).