Sinkhole also form in high and dry places in specific locations. Sinkholes that capture drainage can hold it in large limestone caves. These caves may drain into tributaries of larger rivers. The formation of sinkholes involves natural processes of erosion or gradual removal of slightly soluble bedrock (such as limestone) by percolating water, the collapse of a cave roof, or a lowering of the water table. Sinkholes often form through the process of suffosion. For example, groundwater may dissolve the carbonate cement holding the sandstone particles together and then carry away the lax particles, gradually forming a void. Occasionally a sinkhole
A Void a parody of "noir" and horror fiction, with many stylistic tricks, gags, plot twists, and a grim conclusion. On many occasions it implicitly talks about its own lipogrammatic limitation, highlighting its unusual syntax. "A Void"<nowiki>'</nowiki>s protagonists finally work out which symbol is missing, but find it a hazardous topic to discuss, as any who try to bypass this story's constraint risk dying. Philip Howard, writing a lipogrammatic appraisal of "A Void" in his column "Lost Words", said "This is a story chock-full of plots and sub-plots, of loops within loops, of trails in pursuit of trails, all of which allow