Modular safety ladder system

A portable ladder module for climbing a tree, comprising:

• (a) a single support member having a lower end and an upper end;
• (b) a bottom step attached to said lower end;
• (c) a top step attached to said upper end;
• (d) an intermediate step attached to said support member between said bottom step and said top step;
• (e) flexible means removably attached to said support member for suspending said ladder module from said tree, wherein said flexible means is placed in tension when weight is exerted on said ladder module, and wherein said support member further includes connection means for securely connecting said flexible means to said support member;
• (f) first and second stabilizing means attached to said upper end and said lower end of said support member, respectively, for stabilizing said ladder module against said tree, wherein said first and second stabilizing means includes surfaces which are caused to forcibly contact said tree when said flexible means is placed in said tension;
• and
• (g) safety attachment means connected to said flexible means for allowing a secure attachment between said flexible means and a coupling device on said climber, wherein said safety attachment means is horizontally centered on said support member and constructed in a manner to support the weight of said climber, and wherein said safety attachment means comprises a strap having a first end and a second end, wherein said first end and said second end are both connected to said flexible means and said strap straddling said connection means.