  We present the second data release of the COSMOS Lyman-Alpha Mapping And
Tomography Observations (CLAMATO) Survey conducted with the LRIS spectrograph
on the Keck-I telescope. This project used Lyman-alpha forest absorption in the
spectra of faint star forming galaxies and quasars at z ~ 2-3 to trace neutral
hydrogen in the intergalactic medium. In particular, we use 320 objects over a
footprint of ~0.2 deg^2 to reconstruct the absorption field at 2.05 < z < 2.55
at ~2 h^{-1}Mpc resolution. We apply a Wiener filtering technique to the
observed data to reconstruct three dimensional maps of the field over a volume
of 4.1 x 10^5 comoving cubic Mpc. In addition to the filtered flux maps, for
the first time we infer the underlying dark matter field through a forward
modeling framework from a joint likelihood of galaxy and Lyman-alpha forest
data, finding clear examples of the detailed cosmic web consisting of cosmic
voids, sheets, filaments, and nodes. In addition to traditional figures, we
present a number of interactive three dimensional models to allow exploration
of the data and qualitative comparisons to known galaxy surveys. We find that
our inferred over-densities are consistent with those found from galaxy fields.
Our reduced spectra, extracted Lyman-alpha forest pixel data, and reconstructed
tomographic maps are available publicly at
https://doi.org/10.5281/zenodo.7524313
