Figure 1. Sol 88, photographed by Opportunity’s “left” Panoramic Camera “eye.” A significant majority of experts in fungi, lichens, geomorphology, and minerology agreed these may be lichens (Joseph 2016). These lichen-like specimens are estimated to be approximately 2 mm to 6 mm in size/length (based on bore hole specs) and are similar to terrestrial lichens (see text for details). Although there is no known geological process which commonly produces mushroom shaped rocks with stems, it is unknown if these are in fact living organisms. Similarities in morphology are not proof.